glouton123
Hi
Do you mean by changing the template name?
First i do not suggest to do this, as this will make the product a Non JA Product and you will not update it simply when there is template update and you will not get tech support for renamed products.
You can open template style > http://prntscr.com/n6azi0 > copy template > http://prntscr.com/n6azol
Save it with a new name.
The name you will add is your new template.
Regards