To view the list of users in the GVO use the 'Users, Board & Reporting' option of the main navigator (left hand menu)
This will give a full list of all the users. If the list is too long type letters from the name into the search box and the list will only show those users that contain the letters you have added.
The list does not show any 'inactive' users - select the checkbox and these will be displayed.
In a MAT GVO the personal data will be 'redacted' except for those users who you share a board with.
You can click on any username to view the profile. You can select your own profile then Edit to update your personal details and select your preferences as well as updating your 'skills'.
Note: You can edit your own user profile to add telephone, address, email and profile picture.