Shared Spatial Anchors for PC Rift in Unity

Hello, I am trying to use Shared Spatial Anchors for a Unity PC application and I have some issues:
I undestand that Spatial Anchors may be shared with other users using OVRSpace.StorageLocation.Cloud when saving anchors. 
However, from the Meta Quest Developer Hub, in Platform Services I can't activate Cloud Storage. It is not available for Rift Applications (see the screenshot)

So, is it related? May I create spatial anchors and share them with users although Meta doesnt allow to Add the Cloud Storage Service?

Thank you!