How can I create a lookup function where it automatically enters a clients info when I enter the client #?

I want to have a list of clients with their contact info and when I enter the client # (ex: 106), then it automatically fills the fields for their contact info (address, phone, etc.)

It looks like your requirement will need a database to store the list of clients and their contact info. Please allow me to inform you that your requirement is not possible to achieve in the form builder.

However, you might be able to achieve this by downloading the source code of your form and adding custom code using server side programming like PHP to create an interface/connection to pull data from your database to the form fields.

If you are not familiar with coding, it would be best to hire a developer to do this for you. You can find some freelancer developers in these sites: www.upwork.com and www.freelancer.com.

We do have an Autocomplete widget that you might want to check out here: http://widgets.jotform.com/widget/autocomp, but it does not let you automatically enter a clients info when you input an ID.