Saving a Template

If you need to save a template go to File > Save As and select Archicad Project Template

A template is a read-only project file with extension .tpl

When you start a new project select browse template and use the one you’ve created.

https://helpcenter.graphisoft.com/knowledgebase/25926/

For most, the Archicad template is a great starting point and all that’s missing in some cases are your company logo, your details in the Project Info, bunch of favorites and a few extra views/layout sheets.