Hello, I am new to Roll20. The Elven Gate maps and tokens look amazing. I want to run this as a one-off with my players as we migrate to Roll20 for our games. I see there are token sets to use in different encounters, but I am not sure where/to add them. Also, the set-up states " Are there adventurers who can aid the local centaurs in defending their home and uncover the truth behind rumors of an ancient artifact? " How do I know which centaurs are looking for aid? Is there an overview of the game I am overlooking?