
Yes. You can, in multiple ways.
- Here is my web page about File New and its folders.
- Here is my web page about the different kinds of templates and their folders.
- Finally, here are instructions on how to make your custom templates the default that is displayed when you go to File > New.
The basic idea is to discover where you want to store your templates, let Work know the location(s) and then put folders in those locations to group the templates.
You can also use the legacy File > New dialog which organizes these folders into tabs in a dialog.
This is discussed in the first page I linked.