Generic Link for all customers

I use WP-Invoices to send invoices to customers and receive payments.

I created a private page on your plugin and added the wp-invoice details and assigned it to a test account which worked fine.

I was wondering if I could make a generic link that all accounts can follow? as at the minute, I would need to set up a different page for every client which will be very time-consuming.

Is there any way I can have generic pages that are shown to every member?

another quick aside question… with the private pages and files, there are 2 different options… view and view any… I was wondering what the difference was as I thought this might solve my problem, assign the page to one person but all can view, however, appears not to be the case?