Not by any member. When you update or edit anything. It automatically gets to waiting list. Admin then will see the waiting list entries and confirms it, if info is correct. Once status is confirmed. It will be reflected in page.
Eg. If u update rake sharing of train. The thing which you update will be in WL. Admin has feature to see all WL update. Once he confirms, info is correct. Then Rake sharing update will be visible to all with info u provided