1080p Video Doorbell + Homebase 2

My parents currently have the 1080p Video Doorbell (with separate plugin base) and 2c Cameras with Homebase 2.

At the ripe old age of 70+ arming and disarming multiple devices can be prone to mishaps and errors.

Am I correct in thinking that we can remove the plugin base for the doorbell and pair the doorbell directly to the HB2?

If so, can I assume that arming and disarming will be unified across all cameras through a single control on the HB2, and this will also serve as chime for the doorbell?