The develops the drama by putting in certain techniques with both the characters and shots which help to develop the drama. This creates tension and causes the audience to be involved with the drama as this is what the editor does.
One of the techniques that an editor does to develop the drama is External conflict and this is where the story narrative would have an encounter with the protagonist and antagonist which gives a dramatic need to the scene for the protagonist to win and for the protagonist to lose which can give suspense to the scene towards the audience and also the audience would get tense towards the scene.
Another way that the editor uses to challenge the audience and to get them to think about the narrative is to withhold information from the audience which is key to the story of drama. Also by withholding information can be about characters by having a mysterious character that's face is not shown. This challenges the audience to guess at who the character could be which helps engage them with the story. Cross cutting is a technique that the editor uses as another way of withholding information as there would be an action but then would cut to another scene leaving the audience to wanting to know what is happening on the previous actions scene.
There is also another type of conflict that the editor uses for the characters which develops the drama even more which is internal conflict. This sort of conflict concentrates more on the protagonist having a conflict with himself her herself over a touch choice that the protagonist would need to make. So in scenes such as that the editor would use close ups on the protagonist to show how there feeling with their body language which gives an understanding towards the audience.
With developing a drama the editor would have to make scenes that would relate to other scenes that has happened before and after that scene. So the editor would use tense and suspense scenes which would relate to each of the scenes the editor has done.
Subtext is very important and the editor uses this with camera shots of the character expressing how they really feel through the way they act and the way they say towards other characters.