The Profile tab will show the attributes held in the system against the Senior Manager, the same attributes you would see if searched for the user in user management. In this view the attributes will be read only, the only attributes you should be able to update are the IRN number and to tick a box to flag the SM as a Non-Executive director (NED). If you have a data feed in place and you are sending the IRN number via user provisioning you will be unable to change the IRN number here and should instead ensure it is updated via the feed.
If you wish to remove a SM from the register scroll to bottom of the profile page and click Remove from register.
To access the Profile tab you will need to first access the appropriate register, select the Managers tab and then select the relevant Senior Manager.