
Oh certainly, the dog must be secure there - I have mine on a chain (there are rings at the back of the bench to attach the chain to), though a cage is safer...the problem is that the space between the partitions can be very variable, despite the regulations, so a crate won't always fit....
Just tying the lead to the back of the bench is fine if your dog won't chew it (which is why a chain is safer): not too short, but not so long that the dog can get off the bench.
:)