Show information is stored in a separate table in the database, indexed by the show year. There can be only one entry for a given year, but there can be multiple entries, each for a different year. An 'Active' flag identifies which entry is the currently used entry. Any of the values in this show information can be changed at any time, but changes will not be retroactive - if you change the open registration date, entries made before the new date will not be remove, if change a fee value, registration fees will not be recalculated for existing entries.
The three date fields must be entered as the "Year-month-day Hour:Minutes" format shown - this is the internal format in the database and entering it directly like this avoids any translation errors. The 'hours' field is a 24 hour clock, running from midnight (00:00) to 11:59 PM (23:59). Thus, "2016-06-01 13:30" is interpreted as June 1, 2016 at 1:30 PM. The third date field, Registration Penalty, is intended as a date after which registration fees would increase, with a penalty attached. If this date is set to some time after the close of registrations, it will never 'kick in'.
The Registration fees are simply the fees for entering a quilt, whether member or non-member, and either before or after the Penalty date. If there is no penalty or penalty date, it would be safest to set these to the same as the on-time fees, i.e. no penalty.
The Quilt Limit Count is simply a way to limit the number of quilts entered in the show. Once this number is reached, not further quilt entries will be accepted. Entering 0 (zero) or an arbitrarily large number (10000) will disable this feature.
Limiting Entries to Guild members will prohibit non-members (as indicated in the individual profile when a login id is created) from entering quilts. There is no mechanism to verify the information provided in the user profiles - that must be done manually.
The Membership Year Required will change the wording on the ID creation page, so that it asks whether you were a member in the Membership Required year, e.g. 2016 for the 2017 show.
The 'Update Show button will update this show, and in that case the Show Year value cannot be changed - it is the index for this entry. If you want to use this entry as a template for a new entry, change all of the values as desired and use the 'New Show' button. This will not make the new entry the active entry - that is chosen on the previous show information page.