You can add fields, sections, and tabs to standard record types, such as cases, profiles, parties, and user profiles, using the Form Builder. The standard record fields can be “static” or “dynamic”:

• "Dynamic” fields are the text boxes, buttons, picklists, etc. that have been added by a user with the Form Builder. They can be edited or deleted any time after the standard form published. See the fields labelled "2" in the screenshots below in the example party and case forms.
• All other fields are “static” because they are standard to the form and cannot be edited or deleted. System-generated fields, such as the “Created Date” for a case, are static. See the sections labeled "1" in the screenshots below.

All static fields of the record type are located in locked containers on the Form Builder to prevent errors.

To edit a standard record type, click its row on the Forms page to load it in the Form Builder. Refer to the Use the Form Builder article for details on adding fields, tabs, and sections to standard record types. After you publish the standard record type in the Form Builder, users will see your updated form when adding or editing records of that standard record type.