Hello, we have a Vodavi Starplus STS system at one of our locations. I'm hoping someone can point me in the right direction as I'm trying to figure out the following:

We have a subdivision in our company that needs to make outbound calls with a different CallerID. Several extensions are current set up with way, we are looking to add another one to whatever is making that feature work on the first few lines. I'm not sure what am I overlooking but I cannot seem to find a method for doing this in the programming and ops manual. If you can point me to the right terminology to find the info myself, or directly to some documentation, or even if someone is able to write out the procedure anything at this point would be greatly appreciated! Thanks in advance!