Add the ability to queue a change (similar to schedule
it). This would allow someone to build a change on
specific servers they know will have to be done, but do
not know when. Then, they can click a "Hold Change"
button (added to "Apply Now" and "Apply At...") that
would allow them to apply the change or schedule it at
a later date.
These changes could be listed in the "Schedule Changes"
screen as "On hold", or a new "Held Changes" screen
would need to be added to manage those changes on hold.
