I herded them into the coop the first night they spent there, and then every night from then on, they just went to bed themselves! I guess I am just lucky, or they picked up on the training quickly. Now it is a routine. I just go out when it is dark, and shut the pop-holes. Perhaps it also helps that the chickens roost in the same coop too.
A few times recently, I have had them enclosed in an area off the lawn, as it has been so wet and they are really affecting the grass, so they have been shut out of the coop during the day. Come evening time, they have been quacking like crazy to get me to let them into the coop! Telling me, "it's bedtime, Mum, let us in!"
I feed mine in the morning, with enough to last the whole day, as I am out at work. I also don't keep food or water in the coop, as it is too messy and they would just knock it over everywhere. Bribery, or herding are good ideas if you need to. If I need to herd them anywhere, I just stretch my arms out wide but a rake sounds good too or a broom, and walk them towards where I want them. They will follow me for peas but it takes longer. Running around trying to catch them individually is crazy! tried this too, and it just tired me out, stressed them out, and did not succeed!
Good luck!