Alright, I think I figured it all out. First of all, make a new common event called 3 Man Stats[ON]. Set the trigger to none and inside this common event, go to page three of the list of event commands and go down to 'Script' to copy this code in:
CODE
$window1 = Hero_1.new
$window2 = Hero_2.new
$window3 = Hero_3.new
After that, make and turn on a conditional switch named 3 Man Stats so that your common event should look like this:
CODE
$window1 = Hero_1.new
$window2 = Hero_2.new
$window3 = Hero_3.new
Control Switches: [0001: 3 Man Stats] = ON
Next, make the event on the map that allows you to see your stats. Just make an event and go to the first page of the list of event commands and pick Call Common Event and pick the common event we just made.
Finally, make the event that disposes of the windows. Open up the event and make a new event page that turns on if the 3 Man Stats Switch is on. In this new event page, put in a script event command that looks like this:
CODE
$window1.dispose
$window2.dispose
$window3.dispose
Then after that, turn the 3 Man Stats switch off.
Hope that helps