You can snap on the fly to specific features. By specifying a feature and the part of the feature to which you want to snap, your next vertex will automatically be placed regardless of the other snapping settings.
This functionality is available with the Snapping toolbar snapping or the editing classic snapping environment.
- While digitizing on the map, right-click the feature you want to snap to; point to Snap to Feature; then click either Endpoint, Vertex, Midpoint, or Edge. This will place a vertex at the nearest location that matches your choice.
- If nothing happened, move the pointer closer to the element you want to snap to, and try again.