There is a new tool available for Sparkers: Lightdm Settings.
What is Lightdm Settings?
It is a configuration tool for the LightDM display manager.
Installation:
sudo apt update
sudo apt install lightdm-settings
The Lightdm Settings is borrowed from the Linux Mint project:
github.com/linuxmint/lightdm-settings
The tool has been brought to Sparky by Szymon “lami07”.