After you change properties for a specific type of form field, you can set those properties as the default set for that type. For example, you can create a check box, change its properties, and then save the properties as the default values. This would not affect the default properties of other types of form fields, such as text boxes or radio buttons.
Choose Forms > Edit Form In Acrobat so that a check mark appears next to that command on the Forms menu.
Choose Tools > Advanced Editing > Select Object Tool.