I am replying to this, only in the hope that the OP gets an email reminding them about it.
You posted it in the wrong forum or it would have been replied to on the same day.
Just in case anyone else ever searches for the answer to this question. (that I suspect you have figured out by now.)
Your symbol has 2 terminals, they must be terminals no1 and no2. (same numbers as the qty of terminals in the symbol.)
Your component has 4 pins, 1, 2, 3, 4. (these can be named anything you want.)
You want the 2 terminals in the symbol to connect to pins 2 and 3 on the component and display 2 and 3 on the symbol in the schematic.
Easy:
When creating the part you map the pins to terminals in the definition, on the pins tab.
As the symbol will be "gate A" then for pin 2 you put A.1 (symbol terminal 1) and for pin 3 you put A.2 (symbol terminal 2) and when you add it to the schematic it displays only pins 2 and 3.