Click Layout in the top bar. Under the grid picker, the Sync toggles decide how the charts move together:
- Symbol: change the symbol on one chart and the others follow. Use it for one market on several timeframes.
- Interval: the same for the timeframe. Use it for several markets on one timeframe.
- Crosshair: mirrors your crosshair on every chart, so you can line up one moment across markets.
In Monitor grids (the larger shapes, up to 4x4) the symbols stay separate and the interval stays synced across the wall; crosshair sync is still up to you. More on grids in Workspaces, layouts, and widgets.