Equipping a large weapon?

[Hykim]

I have a half orc fighter who I have added a Large Warhammer to the weapon list, but there is no check box to equip the weapon. No Large weapon shows a equip checkbox. I take this to mean the character can't equip the weapon.

On a giant instinct barbarian I have a Large Greataxe equipped, no problem.

The rules for Items and Sizes state, "In most cases, Small or Medium creatures can wield a Large weapon, though it’s unwieldy, giving them the clumsy 1 condition, and the larger size is canceled by the difficulty of swinging the weapon, so it grants no special benefit."
https://2e.aonprd.com/Rules.aspx?ID=256

Am I missing something simple to allow the half orc fighter to equip the Large Warhammer in HLO?

Am I missing something in the rules and the half orc fighter shouldn't be able to equip the Large Warhammer in PF2E without some additional feat or ability?