One member of our service team will be your main contact during seminar preparation and will get in touch with you by email soon after the seminar preparation process has started.

• This email will contain your seminar number. We kindly ask to include this number in the subject of each email you send to us. Your seminar has its own seminar webpage available at https://www.dagstuhl.de/seminar_number.
• We will ask you to send us a short one-page seminar description (also known as “motivation text”) outlining the specific goals and topics to be addressed during the seminar. This crucial text will accompany each invitation letter and will appear on the seminar webpage. Keep in mind that it often plays a major role in the acceptance decision of invitees.
  Schloss Dagstuhl will publish the seminar description under the CC-BY license "Creative Commons Attribution 4.0 International". Please mention in the email to us the authors of the text while simultaneously confirming your (and the other authors') agreement to the publication. We attach a .docx template for the seminar description. While using the template is preferred, feel free to alternatively send your text in any other common format.

Beside the administrative contact, one member of our Scientific Staff will be assigned to your seminar as well.

For Dagstuhl Perspectives Workshops, the organisers are given the possibility to prolong their stay in order to work on the workshop's Dagstuhl Manifesto (cf. "Writing a Dagstuhl Manifesto" below) – if you want to make use of this opportunity, please let us know as soon as possible as we will have to reserve the rooms in our center.

About 4–8 weeks before the seminar, the final preparation for the seminar is kicked off from our side.

• We will send some important information, mainly on traveling to and staying at Schloss Dagstuhl, to the participants. This email also lets participants know how to access further information and tools, e.g., the participant list, the materials page (where participants may upload seminar materials), and the seminar wiki – all of which will also be linked on the seminar webpage.
• Separately, the Scientific Staff will contact you to draw your attention to some things to keep in mind when running a seminar and offer some advice for your final preparations as well as access to the seminar's mailing list.

From here on out, the organizers have a more proactive role as they are responsible for directing the seminar themselves. For example, this is a good point in time for your final preparations and to let the seminar participants know about your plans for the seminar.

• We recommend that you upload a tentative schedule to the seminar's webpage before the seminar (cf. "Seminar Program" below).
• You might want to consider asking seminar participants to upload materials related to their talk, working groups, and so on to the seminar's materials page accessible via the link "Shared Documents" on the seminar's webpage.
• For more interactive preparations, a wiki page for the seminar is also linked on the seminar's webpage.

The program is compiled by the organizers. However, from Dagstuhl's side, some times are fixed, especially the meals:

Assuming the example of a five day seminar, departure is planned after lunch on Friday. The seminar starts Monday morning at 9am, and Wednesday afternoon is typically used to go on a hike or an excursion in the surrounding area. Thus, there are five mornings (from Monday morning to Friday morning) and three afternoons available for a five day seminar per se.

Dagstuhl recommends to have a somewhat detailed schedule planned out in advance and to upload it on the seminar website as early as possible, and update it when it changes. Note that it is highly recommended to use that schedule only as a guideline and to change it dynamically to accommodate the evolving needs of the seminar. Often, seminars only finalize the schedule for the next day the evening before. Note that uploading the updated schedules to the seminar's website will help the participants to always refer to the latest version.

For designing your schedule, we can offer the following advice mainly based on observations made at past seminars here at Dagstuhl and on feedback gathered through surveys:

• Do not cram too much into one day, in particular avoid sessions after dinner when people usually want time for personal interaction. In general, leave enough time for informal discussions.
• Group work is an option to break through the typical conference format but is no panacea. Also, make sure to schedule an opportunity for the groups' results to be briefly presented in front of all seminar participants.
• Ask participants to avoid conference-style talks. Instead, ask for open problems, current ideas and insights, or possible future developments.
• Plan enough time for discussions and questions about the talks, which could alternatively also be grouped together for a whole session of talks with similar topics.
• The first session could be used to let people briefly introduce themselves.
• If several communities meet in your seminar, consider starting off with tutorials or overviews that help people to understand the other groups' views and terminology.

In case of a Dagstuhl Perspectives Workshop, it would be helpful if you could discuss the contents of your Dagstuhl Manifesto (cf. "Writing a Dagstuhl Manifesto" below) already during your workshop.

Wednesday afternoon is traditionally reserved for a hike into the nearby woods or an excursion. A group activity of this type affords the participants to become acquainted with one another in an informal situation, plus offers them the opportunity of getting some exercise. Please contact the Dagstuhl team for advice and maps (unfortunately the team is not available as guides). The team can also help with booking a bus or similar things. Please keep in mind that a bus, entrance fees, and similar costs usually have to be paid in cash.

The financial support given to the seminars requires a documentation as part of Schloss Dagstuhl's quality assurance activities.

Thus, for each seminar a citable report is published in the periodical Dagstuhl Reports, which is published under a Creative Commons license and is based on the OpenAccess principle, i.e., the articles are accessible online and free of charge. The seminar report should include

• an executive summary of the seminar program and the fundamental results,
• an overview of the talks given during the seminar (summarized as talk abstracts), and
• if applicable, summaries (with results) from working groups.

Please familiarize yourself with the more detailed information on Dagstuhl Reports for organizers and don't forget to designate a collector. Also, shortly before the end of the seminar, you will receive an email containing guidelines for the publication process. Note that you will have approximately 8–12 weeks after the seminar to submit the final version for publication.

Schloss Dagstuhl needs your and your seminar's participants' help to document the impact your seminar has. So if you get any results that can be traced back to the seminar, please let Schloss Dagstuhl know about them, be they publications, projects, or even a new job and so on. Please ask the participants to likewise let Schloss Dagstuhl know about results.

If the result is a publication, we will be able to list it under the "Dagstuhl's Impact" section on the seminar's website, which might help other seminar participants to keep track of these results. Also, Schloss Dagstuhl would kindly ask you to acknowledge in the publication that the publication has in some way benefited from the seminar. You are free to word the acknowledgement however you like, but we would ask you to always include the seminar's title and seminar number as well as some kind of link to the seminar's website. Note that a seminar's website can be linked to using "https://www.dagstuhl.de/seminar_number" where "seminar_number" is replaced by the seminar's five-digit seminar number.
Nevertheless, as there have often been questions on how to word the acknowledgement, here are a few fictional example wordings for your inspiration:

• This work has benefitted from Dagstuhl Seminar 22321 "Computation in Fractional-Dimensional Banach Spaces."
• This work has benefitted substantially from Dagstuhl Seminar 22321 "Computation in Fractional-Dimensional Banach Spaces."
• This work has benefitted from the second and fourth author's participation in Dagstuhl Seminar 22321 "Computation in Fractional-Dimensional Banach Spaces."
• Part of this work was initiated by Dagstuhl Seminar 22321 "Computation in Fractional-Dimensional Banach Spaces."

We thank the organizers of Dagstuhl Seminar 22321 "Computation in Fractional-Dimensional Banach Spaces." for bringing us together. We are particularly indebted to seminar participant Jane Doe for asking a question that initiated our research.

While we rely on you and the seminar participants to be proactive in letting us know about outcomes, approximately 1 year after the seminar, all attendees are asked to complete an additional survey, mainly for collecting scientific success stories based on their seminar attendance.