To Copy lights, select the lights in the light list and either:
•Go to the menu Edit > Copy or
•Use Ctrl + Shift + C on your keyboard (Command + Shift + C on a Mac), or
•Right click on the light in the light list and select Copy from the pop-up menu.
You can paste lights within in the same Look, into other Looks and across Projects. Pasted lights are always added to the top of the Light List.
To Paste Lights:
•Go to the menu Edit > Paste or
•Use Ctrl + Shift + V on your keyboard (Command + Shift + V on a Mac), or
•Right click on the light in the light list and select Paste from the pop-up menu.