Outlook App, Restriction on group creation

[Xin3n]

how to restrict users to create public/private groups on Outlook App (Outlook 2016). Please recommend the solution how to implement this through Admin Center or On-Prem Active Directory.

[#2]

Follow the instructions here, they apply to all clients, including Outlook: https://docs.microsoft.com/en-us/microsoft-365/solutions/manage-creation-of-groups?view=o365-worldwi...