To invite a friend, simply click the "gifts" icon located at the left side of your bottom bar

; From the pop up window, click "invite friends" and then choose which of your Facebook friends you would like to invite.
When you're done selecting friends, click "Invite". A bonus will be awarded automatically when your invited friend installs Lucky Time Slots.
Note that if you did not connect Lucky Time Slots to your Facebook account, a pop up window will appear inviting you to connect Lucky Time Slots to your Facebook account.