Entering the stage at the right time is a crutial element of any play. It's extremely important to recognize the cue (the line or lines before) which indicate your entrance. You will be off stage and possibly unable to see the other actors. If your character is actually saying the cue, you need to say the line is loud and clear.
Tips for Entrances and Transitions
What does an entrance tell us?
Who the character is
How the character moves and behaves
The character's relationship with their environment (it is new? is it familiar?)
It shifts the focus of the action on stage to the character who is entering
It gives the audience a quick break from the dialogue!
How to create smooth transitions (Flow)
Know the order of the scenes (have a full understanding of the whole play!)
Know the order of your entrances
Mark in your script where you enter on stage and where you go to stand or speak
Does the following dialogue start immediately or is there a pause?
Everyone should be responsible for moving the furniture or props which they are assigned - we will look at this in more detail in a later rehearsal
Music, visuals and "distractions" also create flow between scenes