Creating custom menus and custom functions within Google Spreadsheet

For this particular project the client requested the addition of a custom menu at the top of his Google Spreadsheet.  In addition to the custom menu I also created custom functions to interact with this menu.  Here I demonstrate these custom menus and their associated custom developed functions...

Hiding certain cells in Google Spreadsheet based upon values in other cells

For this particular project the client requested that certain rows and columns be hidden based upon a value of a different cell.  Here I demonstrate the showing/hiding of rows based upon a cell value..