I would like to use coupons in my Appointment+ installation.
I also installed MarketPress, but for many problems (actually incompatibility with WPML and other usability features) I would not like to use the marketpress cart.
What I need is indeed very simple: add a coupon field directly in the appointment form, so that the user book the appointment, enter the coupon and go directly to the paypal payment form.
Is this possile ? Does it require custom coding ? If any ... can you direct me in the right direction ?
Thanks for your help