Important: To create a secure site requires Super Administrator access to proceed.
Doing this will force all visitors to your site to enter an email address & password to gain access to the site.
A practical way of managing this is to have one site as your main public landing site, that links to your second site, being a secure site.
You will need to have:
- a mailing list set up in contacts (will be a list of contacts having access to secure site)
- a website (that will become the secure site)
First step is to create a Secure Area to apply to your site.
Go to Sites Manager (where all sites are listed).
On the right, is a listing "Secure Areas". Click on this.

At the top of the screen is the button "Add Secure Area". Click on this.

You're at Step one of two. Give a name to the secure area that you wish to apply to your site, then click next.
At Step two, choose a mailing list from the right & click, hold down & drag across to the left. You can choose multiple mailing lists to drag across.
Now click on "Create Secure Area" button to complete the process.
Second step is to apply the Secure Area to a regular site to create a secure site.
Start by clicking on the website you want to be secure.
Click on 'Site Admin' at the top of the screen & choose Secure Areas.

Now choose a Secure Area, then click Save.
Your website is now secure & only accessible to those on the list.