Never.... and people eat FIRST....
ignore it, don't even shh her/him
... just go on eating, if they jump up, push them down, unceremoniously
.... and continue...
I sit on the couch to eat (I know
...bad), with no fewer than 3 sleeping on the couch with me, no one even looks at my plate!
Sounds like they have been rewarded, for the barking, with food or attention.. so it may be slow, but it will work. If you can't ignore...crate... Good luck