Write what the reviewer must hear
A reviewer should not have to discover a hidden track selection to understand a demonstration. List the sounds needed for ordinary viewing: narration, the relevant application sound and any permitted background component. Then identify which additional isolated tracks the editor needs.
Give the review track a clear role
OBS’s multitrack guide recommends a complete first-track mix when the file will be played normally, with other tracks used for separation. Apply the intended routing and ensure the recording output includes that track. A row of checked boxes is useful only when it matches the delivery plan.
Use an original small test with speech alone, example sound alone and both together. These three moments let the reviewer recognize an incomplete mix without having to infer it from meters.
Inspect the delivered copy
Open the exact file intended for handover in a normal player and check those moments. If it contains only narration, compare the selected track and the routing map before concluding that the demonstration sound never reached the recording.
Keep the track purpose note with the file. A later remux or export needs its own brief check because the handover artifact, not the original settings screenshot, is what the recipient receives. No audio was recorded or mixed for this article.
Questions answered
Why keep isolated tracks if the first track is complete?
They can serve editing while the complete mix serves ordinary review.
Does a moving meter prove the review file includes that source?
No. Inspect the recorded track and the actual delivery copy.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.