Force adding tag on posts by user group + custom template per user group

Support
1

As the admin of the forum, I will have certain tags reserved to topics I start, limited to certain categories, e.g. I have a category “Music Production” and I have a “music-production-by-tiago” tag, just to give the users the chance of finding all my topics in one place.

I want to make sure that I never forget to add those tags, because that will help me keep the forum organized when it comes to my topics.

Is there a way to set things up like:
If it’s the admin (or user XYZ), mandate adding this tag group to this category?
If not, can I have custom composer templates that are dependent of the user group, or user, and also category?
Or any other option that reminds me of this?

3

Why do you need a tag for users finding all your topics in one place?

All topics can be found in your user activity.

You can also search for topics by a specific user [e.g. https://meta.discourse.org/search?q=%40alltiagocom%20in%3Afirst%20%23support] or filter the topic list for those [e.g. https://meta.discourse.org/filter?q=category%3Asupport%20%20created-by%3Aalltiagocom].

Depending on the general use of the category, the User Portfolio component is also a way to highlight topics created.