I am sorry, but I am still unsure about the scenario.
RadGridView has a GridViewNewRowInfo - a new row on the top that allows you to add rows to the grid.
Below the new row are the data rows - GridViewDataRowInfos.
So now, you want :
1. When you are in the new row, to add value for cell1, cell2, cell3, cell4, cell5 and hit Enter and this row to be added and then you are back in cell1 in the new row?
2. You want to be in some data row, add values to the cells and press Enter when you are in cell5 and right after the currently edited row which values are saved, add a new empty row with no values in it below the edited row and put the first cell from the row added in edit mode?
If none of the above is your case, please try providing additional details., video and/or sketches so I can get a clear picture of it, and help you implement it.
Thank you in advance for your cooperation.
the Telerik team