Wht did you post this in the JASS section. It's very simple to do with GUI trigger. Here's an example for it: 1. Make a rect with the tool palete. Name it something like spawn place. 2. Decide where will the units go attacking and make a point variable like Attack Point. Set it to the place of the attack. 3. Make a spawn trigger. For example :
Spawn
Events
Time - Every 20.00 seconds of game time
Conditions
Actions
Unit - Create 5 Footman for Player 1 (Red) at (Center of Spawn Place <gen>) facing Attack_Point
4. Make an attack trigger. Example :
Attack
Events
Unit - A unit enters (Convert Spawn Place <gen> to a region)
Conditions
Actions
Unit - Order (Entering unit) to Attack-Move To Attack_Point
