Start a Call Start a call In any room or DM, click the phone/camera icon in the header. Choose voice‑only or video; invite others by sharing the call link if needed. In‑call basics Mute/unmute, toggle camera, and share your screen. Use chat to drop links or notes while presenting. Tips Wear headphones to reduce echo; mute when not speaking. For large meetings, prefer a dedicated meeting room/channel and post notes afterward.