A:
To Postpone Definitely:
If the chairman fails to take up the postponed item at the appropriate time, any member may Call For The Orders Of The Day (see RONR Section 18).
If the postponement was for a particular time or after a specific event, the chairman revives the issue at that time, or thereafter when pending business is concluded.
(E.g., if it was postponed until 3 p.m., and at 3 p.m. a different motion is being considered, the postponed motion is taken up after the pending motion is disposed of.)
If the postponement was for the next meeting (or session), the chairman takes it up during General Orders, immediately after Unfinished Business.
If several motions have been postponed to the same time, they are taken up in the order they were postponed.
(See RONR Section 14.)