Each entry in rowDefs is one row of buttons on the Event Capture page, with an optional gridCols (e.g. "grid-cols-4") and an array of buttons. Each button needs an event (unique identifier), text (display label), and color (btn-blue, btn-red, btn-green, btn-yellow, btn-orange, btn-gray). Buttons can also set lead and lag: the seconds of video to include before and after the press in the exported clip (default 5).

Team boards (like hockey-one-zoned) add a zones block and rows with "team": 1 or 2. A team row can hold several grids; its buttons take the team's colour and code (e.g. FIRE BS), and buttons with "zoned": true also add the active zone (FIRE BS2). A row with "team": "selected" shows a team toggle and logs for the selected team.