Hi Wayne,

Sure, I can help you with that. Here are the steps to hide columns AQ23 to AZ23 in Microsoft Excel:

1. Select the columns you want to hide. In this case, click on column AQ and drag the mouse to column AZ to select all the columns in between.
2. Right-click on any of the selected column headers. This will open a drop-down menu.
3. From the drop-down menu, select "Hide". This will hide the selected columns.
   
   Alternatively, you can also use the keyboard shortcut "Ctrl + 0" to hide the selected columns.

To unhide the columns, follow these steps:

1. Select the columns on either side of the hidden columns. In this case, select columns AP and BA.
2. Right-click on any of the selected column headers.
3. From the drop-down menu, select "Unhide". This will unhide the hidden columns.
   
   Alternatively, you can also use the keyboard shortcut "Ctrl + Shift + 0" to unhide the selected columns.