sponsor, hold (a meeting), give (a dinner)

Radicals

• 主催【しゅさい】
  sponsorship (i.e. conducting under one's auspices), promotion, organizing, organising, hosting, staging
• 催す【もよおす】
  to hold (an event), to give (a dinner, party, etc.), to feel (sensation, emotion, call of nature, etc.), to show signs of
• 開催【かいさい】
  holding (a conference, exhibition, etc.), opening, hosting (e.g. the Olympics)