Hi Kate,
Thank you for your inquire.

Does Amelia auto-adjust for time zone when a client is booking? 

Yes, you can set the option in the plugin to display the time slots in the client time zone.

Can my employees be in different time zones?

Unfortunately no, all employees must be in the same time zone.

Are coupons/promo codes supported?

Yes, we do have coupons option in our plugin, more information on this link.

Hi James,

Sorry to disappoint you but this feature will not be soon, since there are some more requested ones that we are currently working on.