Instruct users on how to enable location services in a browser

[eebbesen]

Safari desktop

1. Enable location services (more)
2. Safari -> Preferences -> Websites -> Location

Maybe even videos for complete help?

[eebbesen]

Android

You can grant apps (like browsers) location permissions, usually via Settings -> Apps or Settings -> Applications. In my experience, if you grant location permissions to a browser app like Chrome or Ghostery your location will be revealed to any website that asks for it without being notified.

OxygenOS

• Ghostery requires granting of location permissions to all websites. "Allow location" selection
  only displayed if location permissions aren't granted, and that's not honored.
• Chrome allows you to selectively allow sites access if you haven't granted location permissions to the Chrome at the system level by prompting you when a website requests your location