I want to colaspse all the groups when the table is loaded. How can I do that? I tried to colapse all but one using asExpandedGroups, but it doesn't work (none colapse at all!)

I needed the same functionality. The following worked for me: .rowGrouping({ asExpandedGroups: [], bExpandableGrouping: true, bHideGroupingColumn: true });

I believe that this was the answer to your question.

Jovan