I am creating a 7 segment display and a 4-bit register with the display as per this video on Visualizing Data with 7-Segment Displays : https://www.youtube.com/watch?v=hEDQpqhY2MA
At the 14:50 minute mark, you can see that he created a chip for a 4 bit register with a display, and at the 15:00 minute mark, he is using it in another chip where the display is visible. When I try to do the same (screenshot 2), what I see is a box for the 4-bit register with pins for input and output but without the display. How can I get the display to show up whenever I use the chip while making custom chips?