There are two ways to configure the system to automatically push leads into your CRM:
Create a Lead Alert Rule
When creating a Lead Alert Rule, you can check the Push prospects in this alert to CRM checkbox. Anytime a tracked prospect visits one of your tracked websites and has activity or attributes that match the criteria for your alert rule, the prospect record will automatically be pushed to your CRM during the next update interval.
Use a "Push to CRM" Action in a Running Campaign
When creating a new Campaign, you can include Push to CRM Actions in the campaign flow(s) of your choice -- any campaign members that reach these actions and have activity or attributes that match the corresponding action criteria will automatically be pushed to your CRM during the next update interval.