You can join Elite by earning the necessary amount of Elite Points. Elite Points are obtained by making any coin purchase, from your Rich Pass Rewards, and for completing a number of qualified spins on any machine. Bet high for more Elite Points!
In order to earn Elite Points from spinning, you must meet the minimum bet amount. The game will let you know when you've increased your bet beyond the qualifying amount. Additionally, Elite Points can only be earned from spins twice each day. After that, you will see a "Limit Reached" notification on your Elite tab along with a timer showing when you can once again earn points in this way.