we usually add value to everything we do

and then we add pins, but why are they so long? here we can adjust lenght of each pin. We chose 3. Then we cut the pin and, since our chip has 20 pins, we will paste an array. Then we fill in that we want 20 pins.

Now, we want to read what pins are called from datasheet or our cards. We open Notepad application and write what all the pins are called. We can get names of all pins from the Atmega Datasheet

Now, we open Schematic Lib List to paste all names of the pins to our schematics.

Here you can see our pins with names. We want a small box for the pins as well. Finally, we want the yellow rectangle to go to the back of our drawing.

Now we have a schematics symbol. We now go to layout.