What do the green, yellow, red, and grey colored dots mean?

The green, yellow, red, and grey colored dots are used to display the log-in status of your patient or colleague:

Green = The user is actively logged in and can receive video call or secure message notifications.

Yellow = The user is away but still has their Synzi app running in the background. These users can still receive video call and secure message notifications.

Red = The user is actively in a video chat. You cannot video call this user until they complete their active video call, but you can still leave them a secure message.

Grey = The user is not logged into Synzi. You cannot initiate a video call to these users, but you can leave them a secure message which they'll receive the next time they log into Synzi.