Enthronement

An enthronement is a ceremony of inauguration, involving a person—usually a monarch or religious leader—being formally seated for the first time upon their throne. This ritual is generally distinguished from a coronation because there is no crown or other regalia that is physically bestowed upon the one being enthroned, though regalia may be present at the ceremony. However, due to traditional usage of "coronation" to describe enthronements of sovereigns who are not physically crowned, the terms are often used interchangeably when referring to such ceremonies. Enthronements occur in both church and state settings, since the throne is seen as a symbol of authority, both secular and spiritual.

Read more about Enthronement:  Religious Ceremonies, State Ceremonies