Dice
This is the dice section where you can set up custom dice. Rather than having numbers on your 6-sided dice, why not have text to determine your next action instead?
New Dice
To create a new custom dice, first give it a name. Then choose your dice; this is standard to 4, 6, 8, 10, 12, 20-sided dice. Below is a text input for each number on your chosen die where you can type text for each number. Once you have done that, save the dice.
To access these in an adventure/campaign, head to the dice roll window and on the bottom right of it, you'll see a drop-down box to roll any of your custom dice you create.