To help dogs to stay calm in their crates, l use a baby monitor and a remote collar very often.
You can also set up a web cam, or use Facetime to serve the same purpose.
My baby monitor allows me to talk to the dog remotely and it also has an infrared red feature so l can see what the dog is doing even when it is very dark.
This is also very useful in helping dogs to practice out of sight down stay, to stop crate barking, stop early signs of trying to break out of crate, and so on.
Usually, l would enforce a down stay if the dog is restless in the crate.
This is only done after the dog has understood how to go into a down for duration and will respond to ecollar communication very fluently so he will not become startled by the sensation.
With Rory, l usually just press the talk button on the monitor, use the ecollar to get him to go back down remotely if he gets up.
Because he understands very clearly what the ecollar means, he knows exactly what to do. He is in complete control on how and when to turn it off.
By having him in a down, we can help him to get into a much calmer mental state without a lot of conflicts.
After a while, he will just default into a down in his crate both physically and mentally.
For attention seeking behaviour, we can interrupt very promptly without appearing in front of the dog in person, which may sometimes reinforce the behaviour.
That is why a baby monitor is so valuable in crate and out of sight training.