Use the tool set to create a Module and then an Area. Make sure you are familiar with how to use it (making a start area, how to use tile sets, how to use the wizards).
Export a character from any game (single or multi-player mode) that you wish to use in another multi-player game. Create the items at a low enough level so that your character can use them. You can check the level on the Properties/General menu of the item.
Be aware that certain abilities will add a certain amount of Required Levels to the item. The easiest way is to use the wizard and create the item at your level, at Godly quality. Make sure after you create the item you have checked as being "Identified" or else you will not be able to use the item (unless your Lore is high enough). This can be found under the Properties/Properties menu, where you place the abilities.
After you are done making you item, place it on the ground anywhere you desire. Nearest to the start location is best, and it is easiest to put them all inside a container of some sort, so you can just take them and place them directly into your inventory.
Save the Module, Run the Module under New/CustomModule, then use the character that you exported (called a Local Character) www.gamesupport.dk. You can now have custom items, names, colors, and abilities to your choosing. Export the character again, then play in a multi-player game.
This does not appear work for a single player mode game.