A new process, Affiliations is introduced in the new Organization Account structure to build organization-level links between customer and MSPs. You can find the list of customers and resellers invited or added to the Organization Account under My Workspace | User Groups > Affiliations tab. Super Admin of the respective account can review the pending Affiliations and approve or reject the request.
Adding customers or resellers is a 2-way process. If an MSP initiates the process to share the products with customer, Super Admin of customer Organization Account should review and approve the request to get added to the MSP Organization Account. Similarly, if customer initiates the process to share the products with an MSP Organization Account, Super Admin of an MSP Organization Account should review and approve the request.