How can I create select-options in a custom screen?

Hello,

I would like to have something similar to the code below in a screen that I designed.

SELECTION-SCREEN BEGIN OF BLOCK b1
                  WITH FRAME TITLE TEXT-001.
         SELECT-OPTIONS aux0 FOR aux2.
         SELECT-OPTIONS aux1 FOR aux2.
SELECTION-SCREEN END OF BLOCK b1.

For example, I need to create a screen with parameters that support intervals, so when I click in the arrow button the SAP dialog box appears.

However, I can only add a 'input field' using the screen painter.

Thank you in advance.