A "simple template" is a basic outline or design that makes things easy to understand and follow. It helps to organize information or tasks in a straightforward way. Full definition
Just a few words and pictures associated with weddings and a couple of simple templates for invitations. (tes.com)
Just use simple templates that begin with «Love your...» or «Can't wait to...» or «Still thinking about...» and add in a truthful ending. (datingadvice.com)