Hello Alexis,

1.Go to catalog item (your Technical catalog), and open.

2. You can see below option under related list: Available For

3. Click on New under Available For and that will create USER CRITERIA as below: wher you can decide who can see it under Roles field and also you can define other criteria's if needed.

Please mark as Correct Answer/Helpful, if applicable.
Thanks!
Abhishek Gardade