There are lots of problems associated with not living at the allotments, or very close by and lots of problems to do with the allotment circumstances in general.
For most here they are their chickens on their land with nobody else likely to interfere. Most do not have someone like C with the issues C has doing unpredicatable things.
I don't usually write much about the problems the other allotment holders are still having with C, or what we are collectively trying to do about them. A full explanation would take pages.
I get told what C has said and written on the official group chat. For example, the others on the group chat have mentioned that I have done a great job with the chickens. C's response was at one point, I'll get rid of the chickens and then he'll go away. I have copies of similar chats.
So, thats the first major point. I could turn up one day and find no chickens.
The things that I do I have to be very carefull that I consult with the other plot holders so at least in theory I have their support. Whether I would get that support should the shit hit the fan is another matter.
The above may not seem relevant to your question but major visible changes can and have sent C into meltdown mode. The last meltdown resulted in C screaming at a plot holder and ripping some flowers out of their plot. The other chickens got rehomed through a similar meltdown.
Ideally I would have built a maternity unit with a ground based nest box. This takes time and money and is an obvious change.
The nest boxes hanging off the back of the coop are not really suitable for turf bases. They don't have sufficient depth.
If I could check the box throughout the day I could probably make a thinner turf layer work by keeping the soil moist, but I'm not there throughout the day.
Changing a nest site after a hen has sat always poses a risk of the hen abandoning the nest. I've had it happen before.
If one is there, one can do something about this; putting the hen back on the nest a few times has worked for me in the past. Obviously I would need to be there to notice that the hen had left the nest. I'm not there, I'm over six miles away.
Fret is not a free range hen. Shredded paper in the nest is what she is used to. A while ago I put straw in the nest box they use and left shredded paper in the nest box they don't. They changed to the nest box with shredded paper.
None of what I have is anywhere near ideal but it is what I have and I'm going to have to work with it. If I can get the base of the nest insulated that will be a start. Looking at the egg arrangement when I have lifted Fret off the nest, it looks as if she is managing to control the eggs well enough. I add paper around the edges as the existing compresses. Most days some gets taken out of the nest by Carbon laying and Fret leaving the nest.