Leaving Taraweeh Prayer Before Imam Finishes

Salam Alaikum warahmatullahi wabarakatuh I have noticed that some brothers and sisters during the time of prayer they leave before the Imam finish. I understand if you leave because you have work tomorrow to do to go to or to catch up in is something important that you have to do at home. But many times you see the same people outside just hanging on talking. There is nothing really urgent for them or make them leave.

You know praying with the Imam until the Imam finish and Nabi sallallahu Sallam said if you pray

purely the Imam until he finished as if you have spent the whole night praying. So this is something you don't want to miss. But what if I want to make my wizard later on in the day or the night sorry, in this case I'll say pray with it with the Imam and when the Imam finishes with her stand up and make one Raka so you make two instead of one and later on in the night you can make your water inshallah to Allah but stay with the amount until the Imam finish now last part Allah accept from all of us.