With BIS-F 7.1912.6 you can leave the Azure Active Directory Domain (AAD) during the preparation phase or join it during the personalisation phase.
The state of dsregcmd / status is checked for AzureADjoined: true, before leaving the AAD with command dsregcmd.exe / leave. The Output of dsregcmd is put into the BIS-F Log.
Perform AAD Tasks:
If you enable this policy setting, AAD Tasks are running if enabled
If you disable this policy setting, all AAD Tasks are not running
If you do not configure this policy setting, all AAD Tasks are not running
Preparation Phase:
Leave Azure Active Directory:
If enable this setting, the AAD Hybrid State (AzureADjoined:YES) is checked and run dsregcmd /leave.
Personalization Phase:
If enabled, dsregcmd /join is running
Best Practices:
Using Windows Virtual Desktop with Intune
https://docs.microsoft.com/en-us/mem/intune/fundamentals/windows-virtual-desktop
Provision Hybrid AAD joined Virtual Machine on Azure to enable Intune
https://support.citrix.com/article/CTX284738