How to: Name a style.
Solution:
Select the cell or range and select 'Style...' from the 'Format' menu.
1) Click on the cell with the style to be named.
2) Select the 'Format' menu and select 'Style...'. (The Style dialog box appears.)
3) Type a name for the style in the 'Style Name' drop-down list box.
4) Click 'OK'.