If you select the layer and go to where you want the IN to be and press the “[” key the layers in point will jump to that location.
You can also nudge the layer into position using
Option/Alt Page Up = Left 1 frame at a time
Option/Alt Page Down = Right 1 frame at a time
Option/Alt SHIFT Page Up = Left 10 frames at a time
Option/Alt SHIFT Page Down = Right 10 frames at a time
I hope this helps