Hey guys, not sure if this was the right place to ask for help but here it is.

What we want to add is add a 4th Cinema box next to the one labeled Cinema 3.
Thats it. The guy who made this for us at work left a few years ago and it's only now that we have needed to edit this.
But we have no clue how!?
Can someone please help me? I will send the excel file via email if thats okay.
THANKS in advanced for taking a look guys.