At tool night this week I had some time after finishing my tenon saw refurb. Dean is making a small model of a classic case for demonstration (I think). I asked him about the sliding dovetails with which he attached the horizontal drawer dividers to the case sides. Dean is very generous in teaching what he knows. My experience has been that asking a question like this leads to Dean helping me do whatever it is. True to form, he helped me layout and cut this practice joint.
Normally the dovetail would be housed inside a dado. But I left that out of this practice piece to save time. The order of operations, if I recall correctly, is as follows.