I wonder how we ever got separated. Then, the audience will hear the idea through the dialogue. So, don't assume you can write into stage directions what a novelist would write about a setting or a character. Any subtleties of relationship or character must go into the dialogue. Dramatic Action Action is someone wanting something.
Action is the strong objective that someone has in a beat or scene or act of a play.
Actions and characters run into obstacles. Train your own senses to be more aware of the details in the world around you. In fact, the fear that you have nothing to write about can easily be dismissed by always choosing to simply go further into depth at moments you feel blocked. Giving more details about a situation always draws the audience in. A hindrance to this intention creates conflict, which can be within the character, an object outside of the character, or another character.