When watching a broadcast in replay on iOS or Android, press and hold to instantly jump into any part of the replay. Thumbnail previews will help guide you as you seek forward and backwards. For finer control, follow the onscreen instructions.
On web, use the scrubber at the beginning of a replay to jump to another part of the video. If the scrubber disappears, hover over the screen (below the broadcast title) to reveal the scrubber.