Hi @Errol Alcoseba ,
I noticed that you would like to find some group policy settings for outlook desktop client, for this requirement, you could search it directly in this website where there's a list of GPO in Office client.(Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)
For example, we could use this value to manage the linkedIn feature:
Registry Hive: HKEY_CURRENT_USER
Registry Path: software\policies\microsoft\office\16.0\common
Value Name: linkedin
Value Type: REG_DWORD
Enabled Value: 1
Disabled Value: 0
Hope that would be helpful to you.
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