REUSE_ALV_GRID_DISPLAY and Multiple Line Selection

I am using REUSE_ALV_GRID_DISPLAY to display a pop up window w/rows to select. The window is showing correctly, in that I am able to select a single row, multiple rows, or all rows. I also understand how to identify the rows that are selected.

My issue is with the multiple row selection - I do not want the user to be required to hold the Ctrl key if they want to select random rows. For example, there are 10 rows in the table and the user wants to process rows 1, 5 and 7.

I'd like to know if anyone has figured out a way to select multiple/random rows WITHOUT HAVING TO HOLD DOWN THE CONTROL KEY.

Any help is appreciated.

Cal