Using BB with the Sequencer in my Roland FA-08 keyboard

Hi, I’m a novice with Midi, so asking for help. I would like my keyboard sequencer to be in sync with my BB. I would prefer the BB to be the controlling device, since I don’t use the sequencer that often. But during a song, if there is a section that I use the sequencer, I would like to simply press ON the sequencer button, and have it in sync with the BB. Can I do that, and how?