Pin your favorite buttons to the notification area.
This brings up the main Quick Actions screen. Here you can see a preview of your current settings. Press "Edit" change the buttons.
Use the Layout Editor to add or change the buttons. See the Layout Editor tutorial for more details.
Pressing add or edit will bring up the property editor. Use the editor to change the appearence or action to trigger. See the Property Editor tutorial for more details.
Press "Change Action" to change what action to trigger when the button is pressed. See the Action Wizard tutorial for more details.