answer:First of all, I’m no expert in this. I’m just brainstorming here. It would be useful to know what is your official relationship to your co-workers? Do you do the same job? In any case, you work at a restaurant. There must be a standard set of things you have to communicate. Sit down with your co-workers some night or morning and work out a set of hand signals for these things. Or even word signals. Perhaps best, both. For other things that are not included in your hand signal system, you will have to try to use words. Things that happen often enough should be given a hand signal. Anyway, that’s my idea. I have no idea if it will work. But it’s something.