Activity
Log by squadron and newspapers.
These menus depend directly on the camp of the chosen reference pilot.
Leave
Allows to accelerate the time in order to accelerate the convalescence of a player so that he can fly again.
Specify the number of days of leave requested.
PWCG didn't do that at first. It just advanced time until you were healed.
Some time ago PWCG was changed to support coop and then to support many pilots even in single player.
It would be most upsetting if somebody was running a coop campaign and PWCG suddenly advanced time by a few months because one guy was seriously wounded.
This option ("Leave") therefore just makes it possible to advance the time if the player (s) wish it or simply let the injured pilot rest in convalescence while the others pilot the missions contunent.
Journal
Newspaper of the squadron.
Equipment Request
PWCG offers the ability to replace any plane in your squadron with a different plane.
Campaign->Activity->Equipment Request
This way you could swap an FW A6 for an A5, if pilots do not own this aircraft.
Squadron log
assessment of injured, killed, lost to wounds, air to air victories, tank kills ...