I am using WHMCS and want to use it to create sites on my WP MU and have two questions:
1. How whmcs provisioning designed to create free non-pro sites? I have created products in whmcs to match the pro sites levels and it all works fine, but how to setup free plan in whmcs, so it can be upgraded to pro site later? Can the free plan be registered on site and inserted in whmcs via api or all plans need to be created with whmsc?
2. Is Pro site have filter functions for upgrade links? I want to change upgrade links in admin menu and admin bar to point to whmcs?