Completing your first full match against an opponent will unlock Booster Missions. These can accessed at the beginning of the Tour Menu (tap the Play button on the Main Menu to access the Tour Menu).

Booster Missions are set scenarios for specific Boosters. They are unlocked as each Booster is unlocked by levelling up in the XP Road. Inside the Booster Missions menu, tap any unlocked Booster to start a Mission. Each Mission consists of a Pool Table with set Ball Positions. The goal is to pot the 8-Ball using the specific Booster. Boosters are "always on" by default inside Booster Missions.

Completing a Booster Mission for the first time awards you with some Gems and XP.

You can also practice using Boosters inside the Practice Parlor, which can also be accessed at the beginning of the Tour Menu. Inside the Practice Parlor will be able to use any Booster for Free with no limitations. Tap once to select the Booster and tap again to confirm use. In this mode you are free to experiment and try out a variety of Shots without using any of your Booster Inventory.