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 help a candidate to the succession of a monarchy (as a kingmaker does), or by extension in any other major organisation.
To ceremonially install someone in some office.
To surround, accompany, or attend.
To spend money, time, or energy on something, especially for some benefit or purpose; used with in.
To commit money or capital in the hope of financial gain.
To lay siege to.
To be involved in; to form strong attachments to.
To prepare for lost wax casting by creating an investment mold (a mixture of a silica sand and plaster).
To make investments.
To formally give (someone) some power or authority.
To envelop, wrap, cover.
To formally give (power or authority).
An unnamed tropical weather pattern "to investigate" for development into a significant (named) system.