To help a candidate to the succession of a monarchy (as a kingmaker does), or by extension in any other major organisation.
To put on the throne in a formal installation ceremony called enthronement, equivalent to (and often combined with) coronation and/or other ceremonies of investiture
To cause something to be removed or replaced in its role; to displace, overturn.
To upset the composure of (in various ways); to astound, shock, or unsettle.
To remove from some (especially political) position or office; to dethrone.
To come out or off of a seat.
To remove or dislodge from a seat (especially referring to horse riding).