Logitech K780 Frequently Asked Questions Manual page 14

Click OK to allow access for Logitech Options Daemon so that you can continue to use these
features.
In case you clicked Don't Allow, use the following steps to allow access manually:
1. Launch System Preferences.
2. Click Security & Privacy.
3. Click the Privacy tab.
4. In the left panel, click Automation and then check the boxes under Logitech Options
Daemon to provide access (as shown below). If you are unable to interact with the
checkboxes, please click the lock icon on the bottom left corner and then check the
boxes.