Final answer:
The stage manager differentiates the blocking for one actor versus another using the actor's printed name or initials circled with the stage directions.
Step-by-step explanation:
The stage manager differentiates between the blocking for one actor versus another by using the actor's printed name in the script. The blocking instructions are typically written alongside or below the actor's name in the script. The stage manager may also use the actor's initials circled with the stage directions to indicate the specific blocking for each actor.
Learn more about differentiating blocking for actors