Redefining Axis

I have an I beam supported by posts on both ends. I want to add a point force on the I beam acting perpendicular to the I beam width. However my CAD axis are not properly aligned for me to be able to just apply a force along 1 axis.
Is there any way that I could redefine axis so that I can only add force along 1 axis and it would act directly perpendicular to my I beam width?

Hi there,
Thank you for posting on the forum
Can you please share your project link?
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