Non - standard mission planning


I am using mission planner for flight planning purposes to perform NADIR ortho-mosiac.

As 3D mapping using cameras which aren’t aiming “90 degrees to the ground” (NADIR), say, aiming 45 degrees down, (so the fronts of buildings are better captured) - I did not find any option for flight planning in such way on the mission planner.
How do I plan a mission if I have a front-pointing-camera in 45 degrees down the ground?

Is there an option to do so?