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 the service code into the field.
6. Click on the Arrow.
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  Remove on the right next to the service you want to remove.
6. Click DISABLE SERVICE.