I'll try and give you some guidance and tell you what works for me and my boyfriend/cuck.

When he comes over, don't lock him up right away. Tease him first by sucking his cock a bit, then lock him up. Tease and denial are key for the entire time he's caged and also when he's free. Leave him in his cage for however long you want and have him pleasure you. Reward politeness and punish bluntness or arrogance. If you have a cage with an open design you can give him an occasional stroke or lick to make him throbbing and wanting more as a reward. A swift, light kick to the balls will do as a punishment. Often promise him you'll release him after he's made you cum, but then change you're mind, saying he wasn't good enough. Have him begging for release. When he's finally gifted release, make him edge and ruin first. He'll be begging for an orgasm and it will have been well worth the wait.