Requirement:

During my training period, I came across to a scenario, where we need to modify the permission level of an existing security group. Initially the group’s permission Level was “Designer” level as it is shown in following figure.

modify Groupe Permission

And we need to modify the Group property and assign “Contribute” permission level. Set-SPOSiteGroupcmdlet allow us to address this requirement.

Syntax:

Output:

After execute the above cmdlets the Group will be having Contribute permission level as shown in following figure.
After Permission Changed