Platform administrators can either create their own individual groups or use existing groups from other platforms. In order to use an existing group from a platform ("original platform") on another platform ("concomitant platform"), the s-admin needs to make some settings. 
 
 
Shared groups differ from individual groups in the following points: 
  - In the interface area "Groups & Users" > "Editing groups":
 
 
  
    - The group title is written in italic letters in the interface of the concomitant platform.
 
       
     
    - In the concomitant platform, p-admins are able to remove shared groups from their platform. This
doesn't affect the original platform or any other concomitant platform. 
 
       
     
    - It is not possible to hide or unhide shared groups on a concomitant
platform.
 
       
     
    - Title and description are only changeable in the original platform.
 
       
     
    - Users
can only be removed from shared groups on the original platform. In
this case, the p-admin of the original platform needs to be contacted.
 
       
     
    - Users can be added to shared groups on both, the original and
the concomitant platform. [This is essential! Otherwise users of the
concomitant platform would need to register on the original platform as
well.]
 
       
     
   
 
  - In the interface area "Groups & Users" > "Automatic group assignment":
 
 
  
    - Shared groups are displayed in the interface for automatic group assignment.
 
       
     
   
 
  - In the interface area "Groups & Users" > "All groups & users":
 
 
  
    - Shared groups are not displayed in the interface "All groups
& users". [Otherwise, you would have to list users which are not
registered on the concomitant platform but on the original platform.]
   
    
  
 All groups & new users: Here the new registered users of the last 30 days are shown.   
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