Sources say that the governor has 'set the wheels in motion' for a run for the presidency. [=the governor has started to run for president]
They will be taking steps to 'set/put' the divorce proceedings 'in motion'. [=to begin the divorce proceedings]
She made a 'motion' that the meeting (should) be adjourned. = She made a 'motion' to adjourn (the meeting).
(..) Now you’re closer to the chancellor than anyone. Please, ask him to stop the fighting and let diplomacy resume. Don’t ask me to do that. Make a motion in the senate, where that kind of a request belongs. - What is it? - Nothing. Don’t do this. Don’t shut me out. Let me help you. (..)2005 Star Wars: Episode III - Revenge of the Sith