1. choose the graphic for the monster, you want to fight.
2. go to the 3rd page of events.
3. go to Battle Processing
4. Choose the "troop" for the monster, also choose if they can escape the battle, and if they can keep playing even if they lose.
5. Go back to the 1st page of events, select "Control Self Switch.."
6. Turn self switch A On.
7. Click "New Event Page", check the precondition box for "Self Switch" and make sure it's A = ON.
8. Change the event graphic to blank.
That should do it, I haven't used the program in a while, so I'm a bit rusty, let me know if you have more problems.