[Dorwido]

you can do it with macro too, just changing the *x,*y values to fit your need:

/run COMBAT_TEXT_LOCATIONS = {startX  = 0,startY = 384 * COMBAT_TEXT_Y_SCALE,endX =0,endY = 609 * COMBAT_TEXT_Y_SCALE};

or with addon: a posthook on "CombatText_UpdateDisplayedMessages" and then change those value to have it permanent.

that is when you dont want to change every single message and just want to change the floating in general