TEMPLATES on Start up

How does one choose a template to use on start up?

I use Make 2017 on a Mac. To change the opening template, I;
Select Sketchup in the menu bar >select settings (preferences) >select template and then scroll to select the template I want to use; this now becomes the default template. This is also the location where my personalised templates are stored. I have a few called Bill’s mm, Bill’s cm, Bill’s M for my woodworking that I select before starting out so I don’t have to mess with the ‘units’ from the 'model info" choice under the 'Window" menu. Hope this helps!

Ah, yes, thank you.