I'm not sure where I've gone wrong but I definately have. 

First up I absolutely am looking for support in central auckland for this set up so please feel free to recommend people I can pay to do this because I'm way out of my depth. 

We have this office setup, one phone line with 2talk which goes to a Yealink W52P Base and a total of 5 handsets (some W52H some W56H). 

I kind of winged my way through the set up of this but it all works really well and I'm assuming I'm actually using VOIP and not just some kind of weird DECT intercom setup (see I told you I don't know what I'm doing).

I have to add 5 new employees - obvious this is a roadblock as the base only handles 5 handsets.

Can I add another base and have 5 more ? How would I do this. How would people be able to transfer calls to one another, as at the moment they use the phone book of people in the base?

Please, someone put me out of my misery

Also, surely there's some cool system for remote working and stuff now as well where you can transfer it to them and they know they are at home and it rings on their cell phone or pc?? I feel like I'm missing the software for all of the above

Thank you, if you have read this and have any pearls of wisdom