Ahh okay thanks for explaining. You have a lot of cats, do you have a special room inside your home set up to put the newcomers in when they first arrive? Ours stay upstairs behind a chicken wire door-
Once the newcomers aren't being spit and hissed at by the resident cats (I have 9 inside/outside cats) and 2 purely outside cats then I put them outside in two large cages for 24 hours. Before I release them, I sprinkle catnip all over the ground, set out large bowls of canned food, fresh water and dry food. Then I release and pray. They usually scatter and go into the woods, but over the week following release, they come in to feed and stick around and there is little fighting-
Bless you for what you do- and good luck!