I just installed Office 2013 and started to use this book I got a year ago.
Lesson 1-12, #5. The My data header as header box is protected. How do I uncheck this item?
#7. The Sort left to right item in the Sort Options box is protected. How do I uncheck this box?
Why is this protected and it's purpose? How is it turned on/off?
Is Office 2013 the problem?