Help with my custom menu!

Hello! I'm creating a EarthBound game for RPG MAKER XP and I need to sort out two things:

1. Making so that the "choices" are beside each other, (If you don't understand what I mean please check this picture)

So I don't need to click next or back everytime I want to select a option from the menu.

2. Making so that when selecting the "Goods" choice, It brings up a menu with the items you have in your inventory. Also is it possible to bring up the spells menu when selecting PSI?

BTW I use Hermes Extends RMXP's Message System here the code: https://www.mediafire.com/?y2ab9m0gcqjbshs