In Ommnio it is not possible to "browse" the app to snoop on profiles, like in dating apps. 😏 Remember that it is a communication app that the organization provides to make it easier for you to coordinate.
However, you may need to know who you are talking to. So you can see which people are members of a group by following the instructions you will find in this article: How to know who is in each group
The administrator of your organization in Ommnio (probably someone from Human Resources, Communications or General Management) determines the chat groups and who is part of them. Most likely, you will see communication groups related to your interests in the organization.