In the conversation list: 

1. Click Settings , then click Manage team.
2. Or go directly to teams.wire.com.
3. Log in with the team account credentials.
4. Click Services.
5. Insert your Provider ID and Service ID.
6. Click on the Submit.
7. Click Enable service.

Deactivating Services:

1. Click Settings , then click Manage team.
2. Or go directly to teams.wire.com.
3. Log in with the team account credentials.
4. Click Services.
5. Click  on the right next to the service you want to remove.
6. Click Disable service.