The Buff Element on Role can be clicked at any time to add that number to your Dice Roller total. Additionally, if they are linked to a Dice Pool in the Advanced Settings when clicked they will automatically add that Dice Pool to the buff.
Drag and drop the Buff Element (Found under the Gameplay Tab) from the Elements Library in the fourth column of the Sheet Builder, into the 3rd column which is called the Sheet Editor.
To access advanced settings in a Buff Element hover over the upper right-hand corner of a Buff Element located in the Sheet Editor. Upon hovering your mouse over it, you should see a gear icon appear which will allow you to access the advanced Buff Options which include:
