Question, is the thershold qty is the whole receipt qty or a lot of qty. let us say receipt qty is 100, you need the inspection to be done only for 20 and then you require quality to skip the inspection.. in this go for standard skip lot setup in quality.
you can set your frequency based on what you need to skip.
Receipt qty Exceed the receiving qty System should be generated the additonal qty is with inspection required only. Kindly once check your Specificaiton and collection plans setups. Then Check the item master specific item specific organizations level what receipt routing set?