Kindly add a feature in which we can repeat only specific objects on the next frame

It is very important several times our clients requested to add a new class in our prepared dataset. we have to annotate it by uploading new dataset just because we cannot repeat a single specific class in our prepared dataset. if we click repeat button it will paste all the objects from the previous frame. It is very time taking process to annotate a single class on each frame on our prepared dataset. I hope your team understands this feature.