Hi @Mo,
Is your horizontal axis categorical, meaning the actual day names of the week? If so, you might be able to change this by right clicking the column and then modifying the value ordering column property. Or is your x-data continuous?
Can you share what the graph looks like and what you want it to look like?
If it's ordinal, you might be able to modify the Value|Label for the Axis Label Row option under X Axis Settings.
Hope this helps!,
DS