How to predefine static content of collection type?

System Information
  • Strapi Version: v4.2.3
  • Operating System: MacOS
  • Database: sqlite
  • Node Version: v17.7.2
  • NPM Version:
  • Yarn Version::

Hi All !
Users/admins in the Author role can create an activity that has a many to many relationship with a category (text field) and I would like the category to contain a list of predefined content that is fixed and non-modifiable (Fauna Flora, Ecology)
How is it possible ?