Default config type file on Genieacs 1.2.0?

As I know in genieacs 1.1, if you wish to overwrite default config script of the router with your own default config script that you want to apply after a reset , then you have to add a special file type to the Genieacs-gui. it can be dome by adding the file type name in the “_form.html.erb”

but in genieacs 1.2 what have I do?
Does anyone know of a guide?
As some colleagues in this forum I am interested in configuring Mikrotik and Huawei devices efficiently.

Thank you in advanced