How to: Freeze titles both vertically and horizontally.
Solution:
Select the cell just below and to the right of the titles. Select 'Freeze Panes' from the 'Window' menu.
1) Select the cell just below and to the right of the titles to be frozen.
2) Select the 'Window' menu and select 'Freeze Panes'.
NOTE: To unfreeze the titles, select the 'Window' menu and select 'Unfreeze Panes'.