Gagan Deep Singh

Notice: Currently works only with WordPress Classic Editor, not Gutenberg compatible
Allows you to choose primary category for posts and custom post types.
When the permalink structure includes category, the category marked as Primary, will be used for generating the permalink of the post.
Works with custom post types and custom taxonomies as long as the taxonomy supports hierarchical structure.

Easy Primary Category

Allows you to choose primary category for posts and custom post types.

theode

I once thought I need different primary menus for different viewers. 
In best case those users have a GET paramter which decides which menu has to be shown.
For Example: 
You go into WordPress and add a menu with a name of your choice. I choosed “music”. 
Now if you want somebody view the music menu you have the parameter http://www.example.com/?view=music. 
You can do this with every menu you have.
In case you leave it empty nothing happen at all.

GET Different Menus

Have different primary menus for different viewers.

Easy Primary Category vs GET Different Menus