Hi,
You can configure the UpdatePath and setting to set the update from shared folder. For example, if you want to get updates automatically from a network share called \server\updates, you'd include the following line in your configuration.xml file:
<Updates Enabled="TRUE" UpdatePath="\\server\updates" />
This will help you specific the update folder for clients:
https://learn.microsoft.com/en-us/deployoffice/updates/configure-update-settings-microsoft-365-apps
If you need the host to automatically install and update files to a shared folder, this may require you to set up a schedule to help you run the downloaded command every once in a while.
setup /download configuration.xml
https://learn.microsoft.com/en-us/deployoffice/ltsc2021/deploy
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