Customize learner's actions at course level

Hello everyone,

When a learner opens a course can perform some action like comment, rate, recommend, add to a journey..

Do you know if it's possible to hide some of these actions for the learner and let that, for example, only the manager can perform them?

In addition, do you know if it's possible to customize the list of values available for some of these tasks (e.g., when a learner withdraws a course)?

Thank you

Alessandra