Ooma Office has an intuitive web portal that allows you to scale as your business grows.  for a new hire, you can set up their personal extension through their mobile device and download our award-winning mobile app for business calls. These options allow your new employee to get up and running straight away and could also be an excellent solution for remote workers or employees who travel frequently.  You can also always buy an additional analog or IP phone from Ooma or purchase an analog phone at your nearest retailer and add an additional line through an Ooma analog-to-internet adapter.  Learn more about adding phone numbers by visiting our FAQ page.