Wordpress WooCommerce Appointments(BOOKINGWP) plugin customization job, coding job

I need to code a little function on the WooCommerce appointments. The plugin is also called BOOKINGWP. This job requires some programming experience in WordPress. Please only reply if you have experience in tweaking the plugin code and modifying its functions. Write "bookingwp" in your proposal so I can be sure you've read the proposal. Thank you!