The first thing you should do is use the cursor to keep moving right from No 1 (where it starts) through the numbers until you get to a slot that says 'CAS - Irdeto'. In fact, I see from one of your pictures that slot no 2 says Irdeto/Betacrypt, that also can be used for Showtime (if it becomes necessary); but the first thing is to see whether any of the Irdeto slots already has ident 0604 --- if you find one like that, that is the one to use for Showtime.If you don't find any Showtime specific slot, you can (a) use any existing free/unused slot for Showtime by selecting CAS Irdeto and entering 0604 for Ident and when keys become available you enter the keys; or (b) convert any of the other Irdeto slots to Showtime by entering 0604 for Ident; or (c) convert any other slot e.g. by using cursor to change CAS from say Seca to Irdeto, enter Showtime's ident and keys when those become available.PS Note that by moving the cursor around on any of the slot you can change or tailor the information on that slot: e.g. slot 1 that has 'CAS - Seca' can be changed to 'CAS - Irdeto' etc by using the cursor (i.e. up/down/left/right keys).