Hola compañero, seguro que has buscado ?????
Pones en google "ocultar radio button abap" y el primer enlace que me sale:
Y ahí tienes el ejemplo, que en AT SELECTION-SCREEN OUTPUT tienes que usar el loop al screen y ya está.
SELECTION-SCREEN BEGIN OF BLOCK 4.
PARAMETERS:BUCH LIKE RFPDO1-DKAGSELE RADIOBUTTON GROUP FRAG modif id C1,
EINK LIKE RFPDO1-DKAGSELE RADIOBUTTON GROUP FRAG modif id C2.
SELECTION-SCREEN END OF BLOCK 4.
AT SELECTION-SCREEN OUTPUT event write the following code
AT SELECTION-SCREEN output.
loop at screen.
if screen-group1 = 'C1'.
screen-input = 0.
screen-invisible = 1.
modify screen.
elseif screen-group1 = 'C2'.
screen-input = 0.
screen-invisible = 1.
modify screen.
endif.
endloop.