The lead delivery settings for a lead is managed on a client level and on a company level. These settings give you more control over how leads are sent to your clients.
To access the client level lead delivery settings screen:
Expand "Users" from the left navigation
Choose "All Users"
Select a user and click the "View" button
Choose the "Profile" tab and select the "Edit User" button
On the Edit User screen choose the "Lead Delivery Settings" tab
To access the company level lead delivery settings screen:
Expand "Companies" from the left navigation
Choose "All Companies"
Select a company and click "View"
Select the "Edit Company" button from the top right corner
The video below will give you a step by step guide with more information on each setting for both the client level and company level lead delivery settings.