Ability to add permissions to users with an organization

Feature: Ability to add permissions or custom roles only for an organization

Description: I would like to create organization-specific custom roles. If we can add permissions to a user with an organization would also be helpful.

Use-case: For the B2B use-case users want to create their custom role which does not necessarily need to apply to all other users. So if we can add permissions to a user only in an organization that would be helpful. Or if we can add roles for specific organizations it would be absolutely helpful.