Menu Links
This allows you to control which menu items appear in the top row of the portal pages:
Security Settings
Security Settings determine which users can access the backend site related to the given portal. Select the Target Site from the drop down of site options. By default, this references only sites from the same Site Collection as the portal site.
This site only access groups - This option allows you to positively identify the group of users who will be redirected to the portal, even if given a direct link to the Target Site URL.
Target site access groups - This option allows you to positively identify the group of users who will have access to the Target Site URL. Users who are not a part of this group will be redirected to the portal
Groups - Allows you to identify which groups get the setting above applied to them.
For example, if you are running an IT Help Desk site, and you'd like to exclude all users EXCEPT IT Help Desk staff from the Target Site (i.e. the IT Help Desk site), use the following settings where the SharePoint Group called IT Help Desk Staff contains all of the IT Help Desk staff that will need access to the backend IT site.
Live Chat Integration
Allows you to have a chat service available for end users when they access the portal pages. This links into one of two things: a bot deployed in your tenant either custom built or from Crow Canyon (https://www.crowcanyon.com/sharepoint-services/crow-canyon-ai-services/) or another third-party chat service like Olark or Drift.