The OpenSRS Control Panel now allows you to manage user accounts as well as permission profiles, which gives you full control over the functions your users are able to access. The functionality comes out of the box with 6 profiles we have created for you (presets) but you can easily copy and modify existing ones as well as create a profile from scratch.
This is a long-awaited feature and we encourage you to familiarize yourself with the functionality. We have developed a quick video tutorial and full documentation is also available in the OpenSRS Knowledge Base.