Kindly introduce the new actors to all the others. Show that this actor has your validation and enthusiasm. Actors will work in new actors easily, generally, as that's what they're taught in acting school... Privileged, already established actors, or those who claim "Method" -- might not want to be 'on set' as much. As they are the stars, they must also be kindly introduced to fellow actors, when they are on set... In other words, there may be some considerations for actors who are called every single day, versus guest stars, or actors with less lines. But Everyone must be treated to be invaluable, with kindness, empathy and respect.

En mi experiencia hay que tener en cuenta el perfil del actor nuevo y el del grupo actual. Los egos, los miedos y las inseguridades son clave. Si el actor nuevo tiene un gran ego, lo mejor es bajarlo antes de introducirlo al grupo. Si el grupo lo ve demasiado elevado lo rechazarán y se agruparán entre ellos contra él. En cambio, si el nuevo tiene miedo por no encajar o no ser lo suficientemente bueno, es mejor dejar que el líder del grupo (siempre hay un líder en cada grupo) lo "adopte". Dejar que ellos hagan un nuevo grupo y optar por un papel más distante y secundario. Por norma general, se suelen aceptar y funciona la escena. En caso contrario, tomar medidas como dinámicas de grupo que favorezcan la confianza y el compa?erismo.

Integrating a new actor into an existing cast needs to be done properly otherwise one can end up having a difficult time directing emotive scenes with perfect reactions all round. Set out a session, either a full morning or afternoon and together with the existing cast take him/her through the character bible and back story. Remember, if the actor is replacing someone, he/she comes in with different skills that the other members need to familiarize themselves with. The actor also comes in with a different energy both personal and professional that is key in creating a well gelled cast.

To ensure a seamless transition when integrating a new actor, communicate clearly with the entire cast and crew. Give the new actor time to rehearse and understand the existing dynamics. Introduce them in a way that makes them feel welcomed and part of the team. Provide guidance on the tone, energy, and relationships in the scenes. Ensure smooth choreography and blocking, and encourage collaboration to build chemistry between the new actor and others.

It helps to share why with those already there. It also helps to share how the decision was made. Both of these put fear and anxiety at ease. After we've taken care of emotion it's time to provide a bit of engagement time to prepare for filming without (hopefully) slowing production down too much.