Rather than use some pre-defined switchboard, I just created an unbound form and called it my startup form. I had at least 32 buttons on that one. Further, I believe I could have used tab controls on that form and it would have worked because no switchboard wizard was ever involved. I believe that but I didn't need more buttons than I had so hever tried it.
Besides, the form I built had some neat stuff in it for logging user actions behind the scenes. It was easier to do in a roll-your-own form than anything Access would build for you.