Thanks for your reply:
1.Since Fslogix need RDS licensing, we need to add a test new w2019 RD Session host server(with RDsession host role) to domain and set below policy to specify the RD licensing server.
Computer Configuration - Policies - Administrative Templates - Windows Components - Remote Desktop Services - Remote Desktop Session Host - Licensing
use the specified remote desktop license servers enable
specify your rdls server
set the remote desktop licensing mode enable per device/user
2.We need find a tool ( like EMCO MSI Package Builder for Windows ) to convert FSLogixAppsSetup.exe to FSLogixAppsSetup.msi so that we can use "install software policy".
How to convert EXE to MSI
https://www.youtube.com/watch?v=3FsIw4lG8No
EMCO MSI Package Builder for Windows
https://emcosoftware.com/msi-package-builder/download
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3.Deploying "install software" policy to apply to test RDsession w2019 server. If it work fine, we can do the same for other RD session host server.
Computer Configuration\policies\software settings\software installation
How to Deploy Software Using Group Policy in Windows Server 2016 | 2019
https://www.youtube.com/watch?v=ubUYZwCi1lU
Use Group Policy to remotely install software
https://video2.skills-academy.com/en-us/troubleshoot/windows-server/group-policy/use-group-policy-to-install-software
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