To gather details about donors, such as their phone numbers and whether they'd like to give anonymously, you can add fields to donation forms. From Tools, Donation form designer add or edit a form. Under Form, select a field in Fields in the Form designer, move it to the form, and configure it.

Note: To edit default fields and those you've added, hover over the section to change and select Click to edit. The Address field can be removed, but you can't configure it.