These instructions are modified from the 8x8 website: https://support.8x8.com/cloud-phone-service/voice/admin-console/setup/users/how-to-set-up-call-forwarding-8x8-admin-console...
Log in to 8x8 Admin Console.
Click Users.
Click Edit (pencil icon) to the right of the extension that you wish to edit.
Select Call forwarding rules. For Numa, you want to check only "When user is busy", "When user does not answer the call within 15 seconds", and "When internet connection is down."
For each of these three, Click Edit (pencil icon) to set the forwarding rules. Select "Forward Directly To:" and enter your Numa number for your Numa Inbox. Again, make sure you do this for "When user is busy", "When user does not asnwer the call within 15 seconds", and "When internet connection is down".
Click Save.
Save the user profile.
How to Confirm It's Working
You can place a test call to your business's phone number from your personal phone. If nobody answers, you should hear your Numa Voicemail greeting.
Troubleshooting
Make sure you don't have an answering machine picking up your calls before they get forwarded.
Contact your phone provider and have them double check that forwarding was set up properly and is active on your line.
Turn off Call Forwarding
Follow the instructions above but UNCHECK the forwarding options.
No matter what, don't hesitate to contact Numa support! We'll happily work with you and your service provider to get you all set up.