Currently, only one authentication method can be applied for a site, but two or more sites with different parameters (say, two sites both using password authentication, but different passwords for each site) can be designed to look like a single site!
This approach can be helpful to replicate a site that requires viewing restriction for select subpages, sections, elements, etc, in it. Below is a sample of this idea from the copy of our previous customer success specialist hiring site.
It looks like a single site but actually two sites were linked together to form it. One site, associated with the Overview & Opportunity menu, is a public site, while the other one, associated with the Recruitment Center menu, is password protected (password is LinkeD).
The linking is made through an external subpage link. Both subpages should be published and their respective web addresses were used as reference for the external subpage link.
Both subpages are from the same copy, as well, to create a cohesive navigation experience, and only the relevant content were updated / changed. For the illustration below, only anchor link names were changed to be made relevant to the sites.
To link two sites (Site A and Site B, with Site A acting like homepage):
1. Prepare both sites to be linked. You can duplicate the sites from the same copy so the navigation experience will be smoother.
2. Publish the sites to get their web addresses.
3. Plan how the sites are to be sequenced, if preferred. The sequence of the sites may follow the order of the menu from left to right, once the sites were linked.
4. On Site A, if needed, change the homepage name.
5. Still on Site A, hit dropdown arrow next to the + Subpage button and select External Link.
6. Indicate the web address of Site B in the web address field.
7. Indicate how you want to label Site B in Site A, as a menu in the EXTERNAL LINK TITLE field.
8. Untick "Open field in a new tab."
9. Click Save External Link button.
10. Click Publish button on the upper right.
11. Repeat the steps 4 to 10 for Site B instead, and use Site A's web address for the repetition of step 6 for Site B.
The demo sites may be copied over to your dashboard for better understanding of this illustration. Please email email@example.com to request for the copy of the sites.