Okay, this is another newbie question.

But it seems that I can only use 36 bars before the rest of them are all greyed out and unusable.

I am thinking it has something to do with the repeat symbol(which I didn't put there or at least don't think I did) on bar 32 but I am not sure why I cannot access the rest of the sheet.

Any ideas on how to lengthen that?

BIAB 2020 MegaPAK Build 426
on a 2009 24-Inch iMac OSX El Capitan Version 10.11.6