Update campaign and wish list requirements

Author: shorodilov

index.rst

@@ -66,6 +66,12 @@ Gift-giving campaigns
  3 members in it.
 - There is no way to join the campaign if it has been run.
 - Any user, except creator, can leave the campaign if it hasn't been run.
+- The creator can remove non-running campaigns regardless of members list,
+ creation time, or status.
+- Admins can remove the campaigns with 3 or less members that has not been
+ run for a specified time.
+- Admins can remove draft campaigns that has not been published during
+ a specified time.
 
 .. rubric:: Draft campaigns
 
@@ -90,5 +96,33 @@ Gift-giving campaigns
 .. rubric:: Completed campaigns
 
 Actually this means the campaign has been completed and moved to the archive.
-Completed campaigns acts as deleted ones. Admins can remove archived campaigns
-at any time (campaigns clean-up).
+Admins can remove archived campaigns at any time (campaigns clean-up).
+No one cannot move running to the completed status. This action is performed
+automatically.
+
+Running the gift-giving campaign
+--------------------------------
+
+- Action to run campaigns is available for their creators or site admins.
+- Once the campaign is in run, no one can join it.
+- Once the campaign is in run, no one can leave it.
+- Each campaign member is assigned to give a gift for randomly chosen person
+ within the same campaign.
+
+.. rubric:: Giver access for wish list
+
+- The wish list of the assigned person becomes visible for the gift giver.
+- The giver can mark any single item within this list as a given gift.
+- After the gift has been made, wish list acts as normal.
+
+.. rubric:: Multiple gifts
+
+In general gift-giving campaigns provide the possibility to make one gift at
+a time. But still there are cases, when a specific user can be assigned twice
+to the same giver from different campaigns. In this case giver can mark as
+many entries, as gift assignments number.
+
+.. rubric:: Autocomplete
+
+Once all the assignments within a campaign are done, the campaign itself should
+be marked as completed.