Norwood will digitise its annual dinner next week in an attempt to reach the entire community.
The event, held on Monday, will be available on Twitter, YouTube and Facebook. More than 1,300 guests, including Simon Cowell and Sarah, Duchess of York, will attend the event.
Viewers can watch chief executive Norma Brier who will appeal to digital participants to raise an extra £1 million.
Ms Brier said: "We are facing the greatest challenges in our 215 year history. To maintain our vital services for the most vulnerable children, adults and families in our community, Norwood needs us now more than ever."