Can someone please turn the cashier counter into an overlay?

Can someone please turn the cashier counter into an overlay?

Use this background INT. SUPERMARKET CHECKOUT LINE OL - DAY it comes with an overlay. That is what OL stands for. To layer it use this command -
INT. SUPERMARKET CHECKOUT LINE OL - DAY with INT. SUPERMARKET CHECKOUT LINE OL - DAY
I know but the layers, you can’t layer the overlay
Yes you can, I literally just showed you the code
INT. SUPERMARKET CHECKOUT LINE OL - DAY with INT. SUPERMARKET CHECKOUT LINE OL - DAY at layer #
Oh ok thank you 
do you understand how much you just saved my script omg