To set a minimum order amount, go to Menus > select the menu where you want to make the change > tab Menu settings
Here, you will see different submenus: General, Theming, Checkout, Display, Behaviour, Pickup codes, Tips and Notifications. Go to Checkout.
Now, scroll down, untill you see Minimum order price. If you have no amount set, you will see 'Not set'.
Add the minimum amount and make sure to click Save in the top right corner.
