I am not sure exactly what you want here, but if I guess right, you can have the ISLD book displayed in a Market Maker box. Simply open a market maker box, right click on it and choose quote sources. THen click show "selected sources only" and choose ISLD.
Or, if you want redi and arca in there as well, choose Nasdaq, and then click ECN's only over on the right of the setup box.