Select only one item on the page to view and edit item specific properties. Editing item specific properties on Multiple item selections are not allowed.
Use a masked input item for editable fields such as phone numbers or social security numbers.
If the date field is read only, typically a text box item with an appropriate 'Read Only Filter' setting is a better choice.
If another type of item should be used instead of the initial item created (text box should really be text area for example) simply change the item type at the top of the property window.
Options
Item type drop down list (top of property page): Allows changing this item to a different item type.
Mask: Determines the format of the mask. Click on the 'Format Help' button for help entering the desired mask string.
Format Help: Provides help to build the desired 'Mask' value.