The Electrical Engineering Department provides four conference rooms which are available by reservation via http://cows.ucdavis.edu/engr
2101 seats up to 11, with 8 around the central table;
3087 seats up to 12, with 8 around the central table;
3089 seats up to 24, with 10 arond the central table;
1127 seats up to 44, with modular tables typically set up in rows for about 30 people.
You can review the layouts and A/V setups here to choose the one which best fits your needs: