Radzen DataGrid Grouping

Is there a way to hide the "drag column here" row in radzendatagrid grouping? Also, is there a way to show multiple groups in one page(collapsed) irrespective of the count of items in each group?

This demo shows how to hide group panel:

and this demo shows how to control groups expanded state (doesn’t matter number of groups or number of items):

Thanks. Currently what is happening is, if in a page where item count is 10 and all 10 items fall under one group, when we do the row collapse it will only show that group. What I am trying to see is, if we do a row collapse, the page should fill in with items from next page as we have more room on the page as the current group is collapsed.

I'm afraid that such feature is not supported.