Setting up Roles for normal users

Hi Anton,

I am trying to remove the ability to Add and edit Devices by non admin user.....I want to make that functionality to be available for the Administrator only.

Is there a way that I can setup roles for non admin users such as this without touching the code through settings? if No, which file do I need to update the roles

You can set "device readonly" flag for any user to disable device editing for that user.