1. Background: The photos of employees accompanying the training should be taken in a clean and tidy background to avoid messy background.

2. Light: When taking photos of employees accompanying the training, you should choose bright light to avoid too many shadows or overexposure.

3. People: The photos of the employees accompanying the training should clearly show the five senses of the people and avoid being vague or too small.

4. Clothing: Employees accompanying the training should wear formal work clothes to avoid wearing casual or untidy clothes.

5. Photo quality: The photos of employees accompanying the training should be in high definition to avoid blurring, noise or other quality problems.