Well you can stack them. Meaning one pin is set to visible with the correct pin type and all others are placed at the same position but hidden (can or possibly should be set to passive as the electrical type). This is how it is required for the official library.
And it is the only option if working with pins set to output or power output without weakening ERC or creating a ton of false positives.
For rules regarding the official lib https://klc.kicad.org/symbol/s4/s4.3/
And a bit of information is also in Electrical type of schematic symbol pins (KiCad 4 and KiCad 5)