Avoid merging cells when sorting ALVs

Hello!

    I'm working with a standard webdynpro that contains an ALV; is there any way where I can modify the properties so that all columns of this ALV do not merge during merging?

  In this docu I found something like that https://help.sap.com/saphelp_nw70ehp1/helpdata/en/85/48a841c1dae034e10000000a1550b0/content.htm

"

groupingValue

If rows in this column have the same groupingValue and are bound, they are displayed only in one cell. That means the TableCellEditor is displayed only once in the first row, and only one common cell border is shown.

If this feature is used, the TableCellEditor may not be input-enabled.

In accessibility mode, the groupingValue is ignored and the table is displayed without this feature."

But then I was unable to access this parameter for all the columns of the ALV

Any help will be greatly appreciated!

Thanks,

Federico.