BookingTimes does not have dropdown menu that can be created via the available configuration. If you wish to have one created please contact us at support@bookingtimes.com and let us know the following:
The title of the item to be added
The link to the page you wish it to navigate to(e.g. custom page, external page etc)
Where you want the item/s to appear
Please note - to keep it as simple to maintain as possible, we want to minimise any custom items that are added, or we may suggest that they will appearing in a certain position so you still have control over the rest of the menu.
To create your own custom pages please refer to Adding custom pages.
To control the existing menu please refer to Editing the menu.

Important Notes
Use dropdowns sparingly
Generally it is better to use single menu links to avoid the top header from being cluttered. You should keep your most important pages at the top, and consider linking other pages in the footer. Sometimes a drop down menu is still the best option, but use them only when needed.
Limit the number of items
For user experience, your dropdown menu should generally have no more than 10 items and should not require the users to scroll. You can read more about dropdown menus and user experience here.