1. Log in to the BBMS Web Portal at https://bbms.blackbaud.com/
  2. Go to Account Management > General Settings
  3. Under Contact Details, click Edit contact details
  4. Edit the Organization Name
  5. Click Save

To update the organization in other software solutions or Blackbaud.com please see I need to update the organization name in my Blackbaud solution or Blackbaud.com profile