Is it possible to delete a page via a formula on mail merge?

Hello,

I am trying to make it so that I have lets say I have a 50 page mail merge template set up but if there is an "X" on the persons name in the account, page 3 gets deleted. Or if the person is a lead, page 4 gets deleted, etc.

This is probably simple but I just don't know how to do it.

Any help is appreciated in this matter.

Thanks!