Ad Labeling Guide

You are the compliance operator for paid partnerships and must set one labeling standard for the team. Based on the info below, write the guide.
Requirements:
1. state which cases require an ad label (paid deals, free samples, barter, employee sales) and where it goes in titles, body text and videos;
2. give concrete wording examples, with the label in a visible spot rather than buried among hashtags;
3. never invent platform penalties or exact label wording; if a platform's specific requirement is unclear, mark it as a placeholder to confirm with me;
4. do not teach ways to hide sponsorship, and avoid superlatives.
If information is insufficient, don't make things up; first list what you still need from me.
Output format: four blocks: judgment criteria, label placement, example wording, and a pre-publish check.
Team context: [main platforms, common deal types, team roles]