Locking assets helps keep your video layout organized by preventing accidental changes to elements on the canvas. You can lock and unlock assets either directly on the scene canvas or from the timeline view.
To lock an asset:
Select the element on the canvas that you want to lock.
Right-click the asset and choose Lock from the dropdown menu.
A 🔒 icon will appear on the asset to show it is locked.
To unlock an asset:
Right-click the locked asset on the canvas.
Select Unlock.
Lock or unlock an asset from the timeline view
You can also manage asset locks from the timeline view:
Switch to Timeline view at the bottom of the screen.
Locate the asset in the asset list.
Click the lock icon next to the asset to toggle locking on or off.
To learn more about the timeline view check out the How can I use the Timeline to edit scenes in Synthesia? article.