The pins are Symbols.
If you create a NAND Gate. You need 2 Symbols.
Nand Symbol (Represents the logic Gate)
PIN Symbol ( Will be used for the pins of the Gate)
I assume your Library has no PIN Symbol. Search for it. Maybe you must look into the default Libraries.
Thank you very much for your reply, actually the library was not activated.
It is my request, could you please share your contact details.
Smps & Led Lighting
I have similar problem.
Help me please.