I am trying to find different slide designs on Impress but the option is not there.

Am using the most up to date and current 5.03 version of Libre office with 'windows 8. In Impress, I need to select a different slide design rather than default. Went into Help, and it says to select “Slide Design” under “Format” menu, but that option is not shown. What do I do? Frantic here!