SM Service Portal - Approvals are not showing

When Approvals are created based on orders from the catalog, they are shown and can be handled in Service Request Catalog (SRC), but they are not available in SM Service Portal for the same users.

So, when an order/request requires an approval, it is Created in Service Manager. The Approval can be managed (approved/denied) in both Service Manager and in Service Request Catalog (SRC). The process in Service Manager works as designed, but the Approvals does not show up in SM Service Portal.

Is an approavl policy created in SM Service Portal (Propel) which is "connected" to Service Manager, required?

Is Approavls for SM Service Portal documented? There is a document describing approval polices in propel, but how does it work for SM Service Portal?