Should i assist hatching?
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Usually after the first day if not then maybe check for splayed legs if still hopping around. After than it should be good. I usually help many chicks with assisted hatching because I enjoy opening my incubator often to take out chicks, which ends up with dried up membranes.
Your fine to just leave them in there for the next 24 hours if you want but bear minimum you have to wait until they dry themselves out in the incubator, and let them get fluffy. When you have the chance after that take them out quickly and use something such as a spray bottle to fastly increase humidity in the incubator spray on the walls of the incubator,... not directly on the eggs.