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Caution: APAN recommends that you do NOT delete any of the default APAN SharePoint groups, because this can make permissions unstable.
For instance, YOU CAN DELETE YOUR OWN ACCESS. The next time you login, you will NOT be able to access your site.
APAN BEST PRACTICE: You should only delete group(s) you have created and no longer want to use. Do not delete the APAN default SharePoint Groups.