Change WordPress user roles and capabilities › Forums › Bug Reports › Permissions Issue › Reply To: Permissions Issue 22/02/2018 at 01:38 #4620 VladimirKeymaster Hi Joe, You can add code for filter to the end of functions.php file of your active theme or setup it as a Must Use plugin. WordPress executes as a MU plugin any .php file located at wp-content/mu-plugins/ folder.