Important: This plugin is an add-on that requires the Bookly PRO installed and activated. View Bookly PRO page at Codecanyon. Let your clients book several services for single visit with the Chain Appointments add-on. The clients will be able to choose multiple services from different service providers at the first step of booking process.
Demo: https://codecanyon.net/item/bookly-chain-appointments-addon/17367838
source http://www.codelist.cc/plugins/242869-bookly-chain-appointments-add-on-v21.html