Rancher 2.6 and user permissions on project level


I have a question about project level permissions in the new UI of Rancher 2.6.

In Rancher < v2.6 it was possible to grant permissions on the project level, to fine grain the access level for users in downstream (RKE1) clusters.

Example (snippet):

Unfortunately, I cannot find this in Rancher 2.6.

Can anyone help me with this by giving me a hint?

Thanks in advance.