Renderman is one of the plugins of Maya.
It follows the rules that every other plugin of Maya has. Be more aware of the relevant versions of it. Please refer to “Maya Render Guide for Desktop Client” and “Maya Render Guide for Web-submission” for more details.
Here are the instructions for setting a Renderman plugin for Maya users:
Select a project＞Pick your Maya version＞Pick your plugin version＞Add＞Save
Select your Maya version＞Choose Plugin version＞Add＞Confirm