Never really had much of an issue with our current and last couple dogs.

I usually give them their dinner when we have ours, so they’re occupied. Worst case is they’ll curl up on your feet under the table while you’re eating.

My dog needs medicine twice daily, so I’ve solved it by making him his own little treat bowl that includes his evening meds, and it works great for getting him to fuck off for a bit. He still begs a little, but not nearly as much as before.

Just be consistent and never give them table scraps. The worst one can do is putting it on an intermittent schedule, meaning; sometimes someone gives them something, other times not. That will make them beg very insistently. If they learn that they will never get human food at dinnertime, then they will probably not beg, or not very much. You can also make sure to feed them their own food around your dinnertime, so that they are satiated and content.

She sits there staring but if I stare her down she’ll leave

So I have experience with two dogs. One was used to getting human food so she would beg all the time. The 2nd was raised never getting human food, plus she was a picky eater. And the 2nd doggo didn’t beg for food