Lois Toulson will get the second quota. Although Eden Cheng won the quota at the European Games, without being disrespectful, she is generally about 20-30 points behind Toulson.
From GB perspective, think the women's 10m platform pairing will definitely double up but there is a chance in the other 3 disciplines that they select 3 athletes:
Women's 3m: Harper and Mew-Jensen will be the synchro pairing and will be favourites for the individual spots but it is possible that Grace Reid could sneak into the squad as an individual.
Men's 3m: Laugher and Harding will go in the synchro and assuming that Laugher is fully recovered from knee injury he'll also be in the individual. There could be a bit of a fight for the second individual spot with Harding, Houldan and Goodfellow all in the mix.
Men's 10m platform: Assuming they qualify here, the synchro pairing will be Daley and Williams. If Daley wants to double up, then he would be favourite for a spot in the individual but if not then Kyle Kothari (competing in the individual in Doha) could be on the squad, but there are quite a few platform divers who are all capable of scoring around mid-400s.
The GB selection policy gives an individual quota to the British Champion but the second spot is at the discretion of the selection panel taking into account performances at the British Champs and the 3 stages of the Diving World Cup.