主しゅ催さい

noun, noun or participle which takes 'suru', transitive verb

organize; host; sponsor

Used when an organization or person takes the lead in planning and running an event, conference, or competition. Often implies official responsibility and public-facing role.

• 市しが毎まい年としこの祭まつりを主しゅ催さいしている。

  The city organizes this festival every year.

• 学がっ会かいを主しゅ催さいする準じゅん備びで忙いそがしい。

  I'm busy preparing to host the academic conference.