We created a new role on our site “Marketing Manager” – which has all access to posts / pages / a custom post type.
Using CPT-UI, we created a custom taxonomy for the regular Posts – I have given our new role access to all permissions for posts – but they can’t see the custom taxonomy when creating a new post (I can as an admin).
I looked thorugh all the access levels with the pro plugin but can’t see an option for this.
* Update: Option “Force custom post types to use their own capabilities” replaces default capabilities for the custom taxonomies also.
It takes the slug of the 1st post type associated with such taxonomy (e.g. ‘video’) and builds own capabilities this way: manage_terms->manage_video_terms, edit_terms->edit_video_terms, delete_terms->delete_video_terms, assign_terms->assign_video_terms.
So search between custom capabilities similar to the named above, but with your custom post type inside and grant them to your role.