How To customize Manage Assignment Sets Page

I have created a custom role to provide access to 'Manage Assignment Sets' and 'Manage Sourcing Rules'.

The requirement is to restrict users from deleting Assignment Sets, while still allowing them to edit a specific field on the 'Edit Assignment Sets' page (specifically, the 'Sourcing rule of Bill of Distribution').

Currently, I have granted the 'View Planning Sourcing Assignment' privilege. However, if I grant the 'Manage Planning Sourcing Assignment' privilege, the user can delete records and edit all fields, which is too permissive.

Expectation :

Does anyone have a solution for configuring this role to meet these specific requirements?

Thank you in advance.