How can I set inventory to the hot bar on PS3?

Hi everyone,
I just accidentally assigned something by accident to the "red" hot bar, erasing the inventory button. Does anyone know how to assign the inventory to the hot bar again? I've been away from the game for a few months and I can't for the life of me figure it out. :(

Thanks!

Press "start" and select "Actions and Traits" from the menu. Then, at the bottom choose "Main Commands", highlight "Inventory" to the right and press the square button.

Brilliant, thank you! I'm starting to get the hang of all this again :)