End user documentation, there will be information here pertinent to someone with an end user's role within an organization.
Possible subjects include:
Creating/editing/deleting voice mail greetings.
Managing voice mail.
Creating/editing/deleting follow me/VmX settings.
Using what-used-to-be-ARI.
Much of freePBX administration is already covered at the freePBX documentation wiki.
Just go there for now, and we will add things specific to trixbox here as necessary.