Leads can be assigned a lead owner. Currently, Lead Liaison allows leads to be assigned manually. Lead ownership may also be automatically assigned when a lead is distributed (based on a set of rules) or if the lead is synced with your CRM account. Lead ownership allows users to be notified of any alerts (for example, buy signal alerts if they're enabled) on their leads and better filter activity from leads they own.
Changing a Lead Owner
There are two ways to assign or change the owner of a lead: