Everyone you sponsor, is on your first level.
Everyone your first level sponsors, is on your second level.
Everyone your second level sponsors, is on your third level.
This continues thru 8 levels.
You cannot force people to be active. Sending those you sponsor, a welcome message, explaining the various ways they can earn at ClixSense, is a good idea which may generate your referrals to participate. Just keep in mind, not everyone is going to take action. Some will. Some won't.
There are various tips posted in the forums in regards to how to advertise your ClixSense, various resources that are available out there to use to advertise your ClixSense, etc.