Creator 4 subform hide delete

Creator 4 subform hide delete

I have not been approve to upgrade yet, so I'm still using the old creator. 

I have a subform that has a red "x" to the left of the each entry. When I hover over it, it says "remove." I cannot figure out how to hide this. I do not want users to be able to delete these entries. Is there a way to disable this delete?

Thanks in advance!