How it works:PC: Face the dinosaur and press the F key.PS4: As you approach your tame, hold the triangle button and choose to view the creature's inventory.Xbox One: Stay close to the dinosaur and hold Y for more options. After that, press on “Access (the dinosaur's) inventory”Nov 2, 2021
Most every item can be used simply by selecting it in your inventory and clicking on the Use Item button in the lower left portion of your inventory window. This is helpful for when you just want to place down a single item like a campfire, forge, smithy, or a single building piece.