I find that I am often asked to 'check Drupal permissions' or 'set Drupal permissions' when, for example, I have added a new Component, like Civi Campaigns, Civi Cases, Civi Grants, or, have installed and enabled a new Extension.
But, if I am just getting started with Civi and Drupal, or have not changed my settings in awhile, I may not be sure what that means.
So, where and how do I check Drupal permissions or set Drupal permissions?