It should be a 2 day install. We would acid wash the pool, pressure wash it, completely dry it, mask off the waterline tile and any borders then apply the first coat of epoxy on the first day.
The second day, the second coat of epoxy gets applied and three coats of aquabright shot on top.
The second coat of epoxy is the critical part. It needs to cover 100% of the pool and set up enough to where it gets tacky but has not begun to skin over. The first coat of Aqua Brite needs to get shot into that tacky epoxy. If it's still too wet the epoxy will burn and the AquaBright will blister, if it's too dry the aquabright won't adhere and will end up flaking off in a few weeks/months.
The epoxy cures at different rates based on temperature humidity, and sun exposure. It took me a lot of pools to figure out the right timing.