Use Custom Chat Script to place trusted HTML or JavaScript content in the session’s interactive sidebar instead of the built-in HeySummit chat. Examples include a third-party chat or community widget. This requires your plan’s live chat features and an eligible embedded session with its interactive sidebar enabled; the script field does not turn that sidebar on by itself.
Add your embed
Go to Content & Schedule > Sessions. Open the session’s Actions > Advanced Settings.
Under Interactive Features, paste the trusted snippet into Custom Chat Script, then select Save.
Use Preview > Broadcast View to check that it loads and fits the sidebar. Keep a copy of the previous snippet before replacing it.
Check the sidebar settings
For built-in interactive features, leave Custom Chat Script blank and keep the required Chat, Q&A and Polls tabs enabled. Event defaults are in Event Settings > Event Experience > Live & Replay Experience; session overrides are in Advanced Settings. Provider-native chat has its own controls and can replace the separate HeySummit sidebar. HeyStream broadcasts include interaction inside their player. Use only code from a provider you trust, and check the intended attendee’s access and playback view.