How To Customize Screens

Get in to Microsoft Outlook

Select the Contacts tab

Select Tools
Forms

Select Contact form

Design the form
You can use the Field Chooser

You can customize the form as you wish.

Design the form using blank entries in all the fields, except for default values you may wish to have.

File
Save As...
Enter a unique name, such as "MySpecial.Oft"

This will be in a folder such as "C:\Program Files\Microsoft Office\Templates\Outlook"

Also, perhaps more importantly, Publish the form, so it can be visible within this PST file.
Tools
Forms
Publish Form

Save it with a name, such as the same one

Save and Close the form

Select your form from the list: "When posting to this folder, use:"

This takes care of any New contacts you create.

Now, to change the default form for the other existing records.

Download Omsgclas.exe now to allow changes to the default form for existing items.