Photoroom has two types of templates:
Pre-made templates that are created by Photoroom. These are sometimes called "Photoroom templates".
Custom templates that you and your team can create for each workspace.
To create your own template, you need to create a design and then convert it into a template. You can find instructions on how to do that in Create a custom template. You can then apply it to your designs.
For information on how to use the pre-made templates that Photoroom provides, see Apply a Photoroom template to a new design.