1. Go to Setup and navigate to Object Manager.
2. Select the Account object.
3. Click on Record Types in the left panel.
4. Click New to create a new record type.
5. Enter the required details and check the Active box.
6. Mark other profiles as Unavailable, keeping Standard User and System Administrator as Available.
7. Assign a single Page Layout to all profiles.
8. Click Save to complete the setup.