Email and SMS notifications are configured in two main areas.   You can turn them off for the whole council via the council profile

Update council profile

• Navigate to Account → Council Profile
• Scroll down to bookings
• Uncheck all communications

Update contact settings

You can also override the council settings on an individual user basis. When you are creating a booking, click on the edit button for your contact

Scroll down, and make sure the contact is set to `Use Default Settings` to use the council settings, or enable SMS or Email for that particular user.