You only need to configure this if you are hosting ManicTime Server yourself. This does not apply if you are using ManicTime Cloud.
Connections allow users to connect to remote services and get the data. For example a user can connect to Google calendar and display Google calendar entries on ManicTime Server.
Before users can set up connections to services, an administrator first needs to configure connection to a remote service. This is done by obtaining Client Id and Client Secret from the remote service. After this, users can then connect their own accounts to the service and get the data. The data which is transferred from the remote service can only be seen by users, not by administrators.
For now, you can set up and use these connections: