Grammar question related to "in time"

0Hello, everybody!02br
02br
00I'd have a question related to the grammatical structure when using the expression "in time".02br
02br
00As we know, we can say "in time for something", for instance: "I've sent Emma a birthday present. I hope it arrives IN TIME FOR her birthday". We also can say "in time to do something, for instance: "I'm in a hurry. I want to be home in time to see the game on television". My question would be: how do we express with an "in time" structure when we would like to say that somebody does something in time and the consequence of this action is that somebody else can do something. The next situation may makes this easier to understand: I work at the same place as Peter. Today Peter is on duty. He want to leave work at 5 o'clock in the afternoon so that he can watch the TV show at home on television. I said to Peter that I will go to the workplace and take his duty by 5 o'clock so he can leave and watch the TV show. How could we express the situation with a structure using "in time"? My guess is: "in time for somebody to do something", so in this example: "I went to the workplace. I arrived just IN TIME FOR Peter TO be able to watch the TV show".02br
02br
00What is your opinion? Is the "in time for somebody to do something" the right structure? Or shall we rather say "in time somebody to do something"? Or something else? I know, we can express this in a more simple way, I just would like to know this aspect of using the structure "in time".02br
02br
00Thank you very much for your help in advance.02br
02br
00Steven0-