Project module - purpose of roles

I'd like to know the tasks/rights/purpose of the different roles in the project module.

I searched TechNet but didn't find anything (neither in my language nor in English).

I'm using a non English version of AX2012, so the following terms might not be 100% correct.

The roles I'm interested in are (all under the heading "responsible"):

1. Sales manager

2. Project manager

3. Project controller

I'd be glad for any hint or link you can provide.