Now you've created your Area Booking Type, you can add this to the relevant Packages, by heading to Settings:
> Packages
> Select 'Edit' next to the required package
> Package Choices
> 'Add choice'
> Enter the name of the choice i.e. Hot Tubs and add a description about this choice
> Type of Items: select this as 'Area Booking Type'
> An 'Area Booking Types' drop down field will appear - click on this to see a list of your Area Booking Types to choose from
> Save
