How to put new templates into program

I received some templates from a Udemy instructor but Scrivener doesn’t recognize them. I tried to drop them into the program, like I do with my adobe programs, but still have no success. the extension is:.scrivtmp. Now they render as pdf in the file folder.

Thank you for your help.

Use the template chooser window (when a project is open, go to File->New Project to get the window). Then click on the “Options” button in the lower left corner and select “Import Templates”