Question about Arlo Smart Hub Add-On Unit

Thanks to you, can you tell me how it works if I take Arlo Pro 2 Set which requires the creation of an account for management, and if we take the Netgear Nighthawk M1 and Arlo Pro 2 which also requires a management account but obviously is not compatible on the same account, how to do? Thank you for your help.

Hello
With the Doorbell it works very well.
have a nice day