Firstly create an alv..
For double click, u have use hotspot = 'X' for that field when u r passing value to the fieldcatlog.
for calling another alv
if sy-ucomm = '&IC1'.
call your another alv using submit.
endif.
For back operation, in your new alv you have to create PF status using SET PF STATUS 'STATUS', & place a BACK button there..
if sy-ucomm = back.
leave to screen 0.
endif.