Web alarm clock for 7:41 p.m.
As you hand over the banana-leaf wrapping, set the alarm for 7:41 pm so the next person knows exactly when to take over. Show them which rice rolls are ready and which still need folding, then use the 19 minutes before 8:00 pm to finish a manageable batch without rushing the seams.
While rice rolls and sticky hands keep everyone busy, check where the alarm sound will play before leaving the station. Audio can quietly remain routed to earphones, so remove them or choose the phone speaker and test the volume once. Keep this browser page open and the phone awake; otherwise, the rice-roll handover may pass without any sound, leaving the next person unsure when the shift changed.
For an evening wrapping session in the Philippines, keep the banana leaves and filling away from the direct blast of the air conditioner. The room may still feel warm at 7:41 pm, but strong cool air can dry the leaf edges while you work. Place the tray on a stable counter where the team stays comfortable, and cover completed rolls lightly until cooking time.