By remember, are referring to add an expiration date to passwords? Something like this:
https://wordpress.org/plugins/expire-user-passwords/
You may find this link useful.
I’m referring to WordPress storing the password in a browser cookie so the user doesn’t have to remember the password. Is there a way to set the password protected page to require the user to enter the password every time they visit the page?
Using this filter https://developer.wordpress.org/reference/hooks/post_password_expires/ you can do that. Please check the example given in the link. You can return 0 if you want the page to ask a password every time a new session starts.
Thank you. I saw this post earlier. I’m just unclear where I would add this within the theme. Can you point me To the right area?
You can add this in your child theme’s functions.php file.