Need help to create a custom event

Thank you very much Madsiur! Its working.

Now I want to know how to make a party of 4 characters.
If I change the narsh event cliff. I go to cc 990e
3d create object 00
3d create object 02
3d create object 03
3d create object 04
CCB910 : 3d 00 3d 02 3d 03 3d 04
The problem is my characters dont change in battle and then nothing appears!

I also want to know if its possible to change the roof to red?