Inner Company Extensions

Hi group

I have been asked by my boss to work on a project and I need help

He wants me to add to the trixbox all employees, add follow me and add their cell phone number to their follow me so he can call them instantly without having to lookup their cell phone number, also put employee based on their region into a voice mail blasting group
he also needs it to be restricted that not everyone calling into the company should be able to dial that employees extension number (we have allot of employee extensions were adding)

now, I was wondering if there is anyway I can build an excel list (or any file) and put all employee extension number, follow me setting, voice mail email notification address, set which employee goes into what voice mail blasting group, and upload it all at once

any help would be greatly appreciated