You can share your Will from your Vault.  After you have uploaded the document you will have the option of sharing that document with anyone in your circle.  When you click “sharing” next to the document you want to share, you will have the option of sharing with anyone in your circle.  If you don’t see the person you want to share with, you just need to click “add them to your circle” and add the person that you want to share with.
You can unshare a document with someone by clicking unshare next to the person you no longer wish to share the document with.