Set a group of units from different provinces to arrive with the latest, all at the same time
There is already a delay function in-game which allows you to coordinate units to arrive at a location at the same time. If this is what you're referring to.
I am talking about selecting different groups of units, and making them arrive at a determined location all together at the same time.
If I want to attack a province but don't have the time to be there when it happens for example.
This can be done manually but the delay slider is very sensitive and hard to work with. (Someone said time can be typed manually but I haven't gotten that to work.)