Call notifications on I watch series 6.

I have just purchased the series 6 cellular I watch.

My line of work means I can not have any notifications or calls come

though to my watch at all. I work with older children in a secure setting and if they were to tap my phone whilst the ring notification came up on my phone it would answer the call. I don’t just want the calls silencing, I need them completely blocked from the watch whilst at work. I know i can silence notifications but it’s not the sound thats the problem. It’s if the kids saw my call notification, tapped the watch and answered the call.

So simply whilst in my work setting my watch needs to just be a step tracker and watch.

Is there any way I can turn off all notifications to my watch so if someone rings me it won’t flash up on my watch screen whilst at work.

Thank you