New profiles are automatically loaded in Rosette Server. You do not have to bring down or restart the instance to add new models or data to Rosette Server.
To add or update models or data, assuming the custom profile root rosette-users and profiles group1 and group2.
Add a new profile with the new models or new data, for example group3.
Delete the profile and re-add it. Delete group1 and then recreate the group1directory with the new models and/or data.