We are currently updating our website using Wix and would like to have single sign-on capability for our private users. It would allow them to sign on once to our private page [portal] and therefore to their specific accounts with our outside vendors.
Here are two tutorials that will help you do this:
Thank you @marlowe-shaeffer , I was looking for those but couldn’t find them. 
@Marlowe (Wix) Thank you for sharing those two links! I’m rather new to this portion of coding and appreciate all the help!
But to make sure this covers what I’m hoping it covers… I’m throwing an example out there:
We would like to have a private ‘portal’ on our website that users could sign-on to, giving them access to our proprietary information, but also immediate access to our outside vendors without having to log in again with another username/password. [Like having a few buttons set up with external links, allowing them to bypass the respective login pages and go straight to those outside vendors’ accounts].
I realize that reads quite convoluted… but again, any help is appreciated!
How can I implement oAuth from another source and not Google? Can we do that?