1. Open the Excellentable in edit mode and go to "Format" Tab

     

  2. Select the cell/cells to align in Left, Center or Right then click "Justify Select" drop down button



    Left: Click Left Align button 



      


    Center: Click Center Align button



     


    Right: Click Right Align button



  3. Select the cell/cells to align in Top, Middle or Bottom then click "Vertical Align" drop down button



    Top: Click Top button
     
     
     



    Middle: Click Middle button



    Bottom: Click Bottom button