I need to change this behavior, the first column for the grid, is overlapping with the row header, I tried to find some code that mades this to happen but didn't find it, is this a default visual display and can I change it, so the row header is at its own colum?
Try setting RowSelectorHeaderStyle to None. https://www.infragistics.com/help/winforms/infragistics.win.ultrawingrid~infragistics.win.ultrawingrid.ultragridoverride~rowselectorheaderstyle