Here are the instructions on placing a prospect search on an existing Contact.

Click on the contact you will be working with. Their information will populate the Contact Details section.

In the Contact Details section, click on the Prospect tab.
Here you are able to view any current searches and their statuses.
Click New to create a new Prospect Search

You are now in the Prospect Wizard
Enter your search parameters
Click the Save Search button when finished entering in the search

Done!

You may click to Prospects to get an overview of prospect searches created.

This is also a good time to double check the Notification Schedule of the auto emails. Simply click on the notification time to make changes.