By default, the Intercom Sync plugin will create an Intercom User when a new user is registered in WordPress.
If you wish to change this behaviour, please see our developer notes below.
Developer Note
We use the register_new_user hook to trigger the creation of a user in WordPress.
We supply a filter called iwp_intercom_user_type that is used in the iwp_register_new_user function to determine if a lead or user will be created in Intercom.