How do you dual wield in hexxit?

In Hexxit, to dual wield weapons, you need to have two compatible weapons in your inventory. Open your inventory and drag one weapon to your off-hand slot, which is located next to your character model. This allows you to use both weapons simultaneously, enabling you to attack with the primary weapon while having the secondary weapon ready for quick use. Make sure the weapons are compatible; most melee weapons can be dual wielded, but some may have specific restrictions.