@Eric OrmanI did found the answer. This feature is not implemented yet. But it would be nice, if there would be a manual workaround, for example over Powershell or Microsoft Graph.
Also a timeline, when its planned to publish this feature, would be helpful.
For example there is also an interessting update "Support for Cloud PC sizes based on virtual graphics processing units (GPU)". Our management and business would love to use this feature. It would solve our needs. But if there is no timeline from microsoft, when they will bring it to the maket, its hard to communicate for me as IT and wait for the business. This forces us to focus and implement solutions, which are already ready on market and which aren't (unfortunately) from Microsoft.
"End grace period option
Currently, certain conditions will put a Cloud PC into a seven-day grace period. At the end of this time the Cloud PC will be deprovisioned and user will lose access.
In a future update, you’ll be able to immediately end the grace period for individual Cloud PCs. By ending the grace period manually, you won’t have to wait the full seven days to remove user access from the Cloud PC."
https://aka.ms/w365roadmap