Yes, you can enable Call Forwarding for $10/mo. This lets people call your 10-digit texting number and be forwarded to a different number (like an office phone, church landline, etc).
Quick steps: From your main account, Settings > Plan, under billing > scroll down to Add-Ons > enable Call Forwarding.
Once call forwarding has been enabled from the main account, it can be used in subaccounts as well. From within any subaccount, head to settings > SMS > click on the 10-digit number.
Things to note:
This feature must first be enabled from the main account before it can be used in subaccounts.
The cost to enable call forwarding is $10/mo.
This applies to your entire account. You won't have to pay $10/mo for each subaccount using call forwarding.