You’d need to put the table at a higher layer than the people (so, it’s in front of them)
Example: if the people are at layer 1, then the table would be at layer 2. If you put the table at layer 0, it would be behind them.
Check out this on layers: HOW TO: Move Characters / Overlays to the Layers
And check out this on overlays: A Guide to Using & Animating OVERLAYS
Good luck!