Has anyone ever seen the shooting of a TV show?

Hello members,
I just now saw that Geet SBS video of lift scene....and i was astonished to see that a random guy was walking behind Drashti-Guru,when Drashti (as Geet ) was delivering her dialogue to Maan..😆....i mean when we saw the scene on tv, that guy was not seen on screen...but here in SBS footage, he was right behind Drashti!!!.....then how come he didn't come in the video?😕......So, am asking that has anyone of you have been to a tv show's set n seen the shooting there?😃

BTW, it's one of my eternal desires to visit a tv shows set once n see how a show is shot n under what conditions....i really want to see that is it really that tough to shoot a daily soap as actors/crew often say!!....😃

Waiting for your answers!

lol he must b some crew member ..evrything is edited later on

maybe they were rehearsing!