If you hand part of your calls to outside call centers, resellers or separate branches, agencies let them work on your phone system without full access for anyone. Each agency signs in to the portal with its own user or a link, sees only the pages you grant and only its own operators.
For each menu page you pick the level: View, if the agency may only look, or Manage, if it may also create, change and delete. An agency can in turn create sub-agencies and give them at most what it received from you.
Agency queues are where outsourcing pays: when an agency operator answers a call from one of these queues, you pay for the call as usual and the agency pays you its per-call price. A sub-agency pays its agency, which pays you. You set the price queue by queue, or it comes from the agency’s price list.
The Agencies report shows charged calls, average cost and total amount for every agency and sub-agency, with the list of charges. You top up their credit, assign price lists and, when needed, enter their portal with "Sign in as".