Click the left green button or press F for a doorbell sound effect, and click the right green button or press J for a buzzer. Tip: If you're in the editor and keep accidentally dragging the buttons, click "Reposition" to fix the placements. (Sorry for bad audio clipping, not my fault)
NOTE: If someone could find a way to stretch the "Incorrect Buzz" sound effect without making it sound weird, that would be great! Show the sound to me in the comments somehow, and I'll use it! (and obviously give credit here, if I forget, just let me know) Credits to DTLegendz-XD for letting me use the "Incorrect Buzz" sound effect. I found it on his project "The Opinion Buzzer" linked here: https://scratch.mit.edu/projects/684146485/