We need to add some text to describe autoregroup behavior for users with no group and submitters to internal nodes.

http://documentation-stage.bne.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.3/html/Grid_User_Guide/sect-Grid_User_Guide-User_Priorities_and_Negotiation-Hierarchical_Fair_Share_HFS.html

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2) The autoregroup feature allows groups to use quota that is unused by other groups. To enable autoregroup for a group, set the GROUP_AUTOREGROUP_group configuration variable to TRUE. Autoregroup works in a hierarchy. Subgroups with the same parent get first chance at slots that are unused by their subgroup peers. If these slots cannot by used, they are passed up the group hierarchy, as long as autoregroup = TRUE is enabled at the higher levels: 

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2) The autoregroup feature allows groups to use quota that is unused by other groups. To enable autoregroup for a group, set the GROUP_AUTOREGROUP_group configuration variable to TRUE. Autoregroup works in a hierarchy. Subgroups with the same parent get first chance at slots that are unused by their subgroup peers. If these slots cannot by used, they are passed up the group hierarchy, as long as autoregroup = TRUE is enabled at the higher levels. There are two situations where behavior is slightly different. The first situation is submitters who do not submit jobs with "+Accounting_Group". These submitters fall into a pool that has autoregroup=true behavior. Note that these jobs will not run unless the top level group quotas sum to less than 1.0. The second situation is submitters against groups that have children groups. This pool also will exhibit autoregroup = true behavior. The extend to which these submitters can claim unused slots is determined by the parent group's autoregroup hierarchy.