In AX 4.0, it is allowed to link an AX user to a particular Sharepoint site group from main menu -> Administration -> Users -> User relations button -> Web sites tab. Unfortunately, this is removed from AX 2009. However, we can still add this feature back if we like by using X++.
The example below show how easy can add an AX user to Sharepoint site owner groups by using X++ and CLRInterop.
Before you run this job, please add Microsoft.Sharepoint.dll (WSS 3.0) as a reference on AOT if it is not registered in GAC. You can find this dll in C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\ISAPI on the server that Enterprise Portal resides.
Please find the job attached related to same.
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