Roles based Access Control (RBAC) / User Groups & Permission using MVC not HMVC

Guys, i wanted to have permission for menus / pages for my admin panel.

i wanted to have a dynamic control for this so that at future Admin user can create / modify the new role or exisiting roles permissions.

I follow MVC & not HMVC,

i have already implemented users,

table structure @ https://ibb.co/JjbXW6t

Users Roles and Permissions should be like this @ https://ibb.co/wN3R8sp

If you are on CodeIgniter 3 you can use Community Auth ACL, or take inspiration from it.