How to create a new SharePoint 2013 sub-site when a new Lead is created in Dynamic CRM 2015 ?

Hi,

I would like to know how to automatically create a new SharePoint Server 2013 sub-site when a new Lead is created in Dynamic CRM 2015. The sub-site name will have the Lead number for eg 20001.

Whenever a document is uploaded for a particular Lead, the document should be saved in the mapped SharePoint sub-site for that Lead.

Your help will be greatly appreciated.

Thanks in advance.

Jack