1. Social media: Many actors will post their roles and photos in short plays on their social media, which is also a good way to find actors.

2. Ending: The ending of a short play usually lists the actors participating in the performance, including the names of the leading actor and other actors.

3. Crew preparation: In the stage of actor preparation, no matter how big or small the crew is, they will release the news in the group or shoot the preview through casting directors, deputy directors and professional actors' agents. After seeing them, actors can submit resumes to fight for them.