You can try the following;
- create a user group in admin panel (portal.office.com).
- share your template with that user group.
However, there's only two options of user access;
- can use
Do you want to share your Template app to specific users/Role based users?
If you want to share your Template app to specific users within your Organization, you should provided specific email address as below:
If you want to share your Template app to Role based users, I agree with @Pat_Wickramage's thought almost. There is no way to share an app to Role based users directly within PowerApps currently.
As an alternative solution, please take a try with the following steps:
The image as below:
More details about sharing an app within PowerApps, please check the following article:
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