For example , there're tow players A and B.

We want player A to cliam a maximum of 200 chunks, and player B to claim a maximum of 400 chunks.

How to operate?

You can give individual players bonus claims in the mod's UI screen or setup permissions, which is explained in the main config file.

You can give individual players bonus claims in the mod's UI screen or setup permissions, which is explained in the main config file.

?????

I cannot find it

is it?
#The number of additional chunk claims that you can make on top of the normal limit. bonusChunkClaims = 0 #The number of additional chunk claim forceloads that you can make on top of the normal limit. bonusChunkForceloads = 0

However, these settings still appear to be global and not player-specific.

You'd be a lot less confused if you read the mod's description.
https://www.curseforge.com/minecraft/mc-mods/open-parties-and-claims

can set，
but not add????