RESOLUTION 1
In Web Designer, open the module,VI_BusinessOwnership_ClaimOwnership. Click on the settings icon as shown below to display the configuration key "Employees who can claim ownership of a business object" (VI_BusinessOwnership_ClaimOwnership_FilterPerson). Then click the plus symbol to enter a custom value:
Enter a where clause, e.g.: "uid_person in ( '2f67de95-6cda-4d43-bf6e-3a1c854ff32a', 'b0c7467f-42b7-453a-bebb-ae949646ac84', 'cb04efec-c3e3-4830-9b01-8fe5ee37f856')"
where
RESOLUTION 2
Customize the menu to remove the "Ownerships" entry.