Go to MenuLoom → Settings → General.

• Restaurant name: used in emails and printed on order tickets.
• Address, Phone and Email: your contact details.
• Currency: used for every price.
• Booking alerts go to: the email addresses that receive new booking alerts.

The time zone and the first day of the week come from Settings → General in WordPress itself, so set them there.

Click Save settings at the bottom when you are done.