macro button to save as macro excel template

hi, want a macro to save as a template.
Basically, to create a button, and a sub to save it as a template when changes are made.
currently, I have to go to file>save as> excel macro enable template.
but its too complicated for my helper to learn. so I would like if its possible to make a button and have him click it.
thank you.

ok, so I recorded a macro:

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but each one, ask me it tells me that a 'file already exist, do you want to replace it" ? how can I over ride that?