Hi All 

I'm looking for some suggestions please. My client wants to have a calendar available on his website that a user can create an appointment on and based on that appointment additional appointments are made a certain number of hours into the future as well.  

So firstly is there a way to allow a user to register as a user in odoo via a different website? 

Secondly how can I automate the scheduling of additional appointments based on an initial appointment? 

Thanks in advance