I love your dirty dozen!
I have posted it many times----Its alot of typing so I jst went back a few pages and copied it------
Most all my nesting boxes are movable. If I have a hen that becomes broody in a non-movable box or corner---I get a movable box ready--with hay and fake eggs---that night I pick up the hen, remove nesting materials, place movable box in that nest/or spot---place her back in the nest with fake eggs(or eggs that I will remove daily and leave her a few more each day I remove the others till I set her) I let her get use to the new nest---usually a day or so----then at night I move her to the hatching pen in total darkness(only flash a light for a second to get bearings). I ease the nest with her in it into the hatching pen and Leave. ALWAYS get the hatching pen set-up before the move---food water etc. If you did that when you move her---that could and will up-set her. I have set just before day break and watch at a distance---when the hen can start seeing a little she knows she is in a new place as she can see a little more she can see her food and water across the pen from her(never where she can get to it while in the nest). She sits there as it gets lighter and "I" feel she is taking in her new place and not being bothered by no one/chicken----I have seen them come out the nest and check the place out, eat, etc then go get back in their nest. I have sit there for a hour and they just sit---so I move on---LOL. When I know she is going to stay, I set her with fresh eggs. Once the hens go broody a second and third time---they know they are going to be moved and I place their fertile eggs under them before I even move them. I do Not NEVER allow a broody to collect her own eggs---I want them to hatch at the same time so I put fresh ones in her nest.
Let me say this----"THIS" is what I do---i am Just sharing--- I am not saying my way is the best way----I am just saying this is what works for me---with great hatches and No Problems. Good Luck.