|Highlight Column C and click Windows...Freeze panes.|
When you scroll, A & B should remain frozen.
How many columns show after that would depend on how wide the columns were and how big the user's monitor is. Different sized monitors will show a different number of columns.
You can also hide columns so that they don't show.
Select the columns you want to Hide by dragging across the Column letter headings, then right-click and choose Hide.
If you want the users to only see a specific set of columns - based on the current date - then you either need to save it that way or use a macro to hide/display columns based on the current date.