You can create another reusable part which extends the functionality of the date display reusable part #EOEXAM04.
To see how this works, create a reusable part (in this example it is called #EOEXAM05). Make its Ancestor the date display reusable part (EOEXAM04) created in the previous section.
Make the Group property of the part "Dates & Times".
Note that apart from the BEGIN_COM statement your reusable part does not contain any code:
BEGIN_COM role(*EXTENDS #EOEXAM04) HEIGHT(29) WIDTH(492)
However, even though not visible in the source code, it inherits all the functionality of its ancestor. (If you want to test this, compile the reusable part, put it in a form and compile and execute the form.)