AT&T Internet Account

Hello - for whatever reason the company I am working for ended up with two accounts with separate sets of accounts in each one. For billing purposes and general maintenance and efficiency, I would like to merge these two, so that, when I go to the AT&T Business Center, I only need to work with

Billing me for free internet

can we see two service accounts on one smarthome manager app on same phone. I have two service address with AT&T Itnernet. Currently the smart home manager app only shows one account, I dont see how to add another account into the apps. any suggestions, thanks Fpluto