Question that might sounds incredibly stupid to most of you

I am a bit confused regarding the paintball pants and knee pads lol…

Basically - I am an airsofter who thinks paintball is also sick, so I’m incorporating paintball gear into my loadout (mostly for efficiency and sleekness, like what speedsofters do.) The thing is, and again, I know this is going to sound dumb, but I have bunkerkings supreme knee pads. They are pretty tight, but I highly doubt I’d be a bigger size. They might just need to stretch a bit. I know they aren’t hardshell types, so I’m not surprised they wouldn’t fit over bulky stuff, but are they meant to go underneath a more normal set of pants?

What about pants like the dna sliding pants? In my mind, you’d want them to be on the outside, so that you’re sliding right on the pads, but are they actually meant to go under your clothes?

I also have the arm pads, and those I can fit over a long sleeve shirt if I want, and the fit is pretty nice. What about when it’s cold? Are you supposed to wear them under something like a hoodie?

I know this seems like a simple beginner loadout question, but I’m just having a hard time understanding when I can use what gear, or if I maybe need to buy different outer pads for when it’s cold?

Finally - if this ends up on a paintball circle jerk sub, I can’t complain lmao