REPORT  ZREPORT_TEST.
.......
PARAMETERS:
            bb1 RADIOBUTTON GROUP rad1 USER-COMMAND flag,
            bb2 RADIOBUTTON GROUP rad1,
            bb3 RADIOBUTTON GROUP rad1.

SELECTION-SCREEN BEGIN OF SCREEN 100 AS SUBSCREEN.
    SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE blok1.  " <---------------- blok1
      SELECT-OPTIONS        g_f1 FOR ......
    SELECTION-SCREEN END OF BLOCK b1.

    SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME TITLE blok2.  " <---------------- blok2
           PARAMETERS         g_f2 TYPE ......
           SELECT-OPTIONS   g_f3 FOR .......
    SELECTION-SCREEN END OF BLOCK b2.

    SELECTION-SCREEN BEGIN OF BLOCK b3 WITH FRAME TITLE blok3.  " <---------------- blok3
      SELECT-OPTIONS g_f4 FOR ......
    SELECTION-SCREEN END OF BLOCK b3.
SELECTION-SCREEN END OF SCREEN 100.

SELECTION-SCREEN: BEGIN OF TABBED BLOCK mytab FOR 6 LINES,
                  END OF BLOCK mytab.

AT SELECTION-SCREEN OUTPUT.
  LOOP AT SCREEN.
    IF     bb1 <> 'X' AND screen-group1 = 'BL1'.
       screen-active = '0'.
    ELSEIF bb2 <> 'X' AND screen-group1 = 'BL2'.
       screen-active = '0'.
    ELSEIF bb3 <> 'X' AND screen-group1 = 'BL3'.
       screen-active = '0'.
    ENDIF.
    MODIFY SCREEN.
  ENDLOOP.