In the Colleagues section, you can see all of the employees in your company, their teams, and their contact information for easier communication.
Use the sidebar filter to find the corresponding teams your colleagues are part of.
This section shows details from each individual user's Profile settings. Any user can add additional details in their Profile, which then would be visible in this section. Details such as a photo, phone number, and other types of notes.
You can see if the user is currently Online - the green dot in the top-right corner would mean that the person is logged in.