How do I add Users / Extensions to the sandbox environment ( service web portal ) while we are developing apps in Sandbox Environment?
For additional users, you can add up to 4 Users / Extensions to your Sandbox Online account
Adding Users / Extensions on Sandbox
You can add a New User with a phone if you need to buy one, or without a phone,if you already have the phone.
To add a virtual extension (no phone numbers) select add users without phones:
It will default to unassigned extensions.
To Edit User / Extension's Info
Step 1: In the Admin Portal, select Phones System > Users
Step 2: Select the Extension
Step 3: Select User Info