How to Make a Class Read/Write
Classes from a template will initially be read-only. To be able to make changes to them, you must change the classes to read/write.
If a class is read-only, this is indicated in the title bar of the design view.
To make a class read/write:
The Class Properties property sheet is displayed.
You cannot change the properties of a class that is currently open in the design view. Close the class first.