How to assign users to group during upload ?

Hi all,

we have to upload a lot of users into our EP6.

according to the documentation it is possible to assign those users to roles during the upload, but we want to use Group-Assignments instead of directly assigning roles to users.

Is there any possibility to assign groups instead of roles during a user-upload ?

The doc shows in the Standard-File-Format" the parameters <namespace>:<name> , may those be used for this purpose, when yes, then how ?

Thanx for any hints...

Stefan