Hi everyone! I have two questions about the following sentence: "From now on R. Lopez stand in for S. Martinez as window person for our secondary customer." Firstly: When you use "Stands in for" you want to say that somebody replace another one during a set / fix time whereas "replace" means that somebody susbstitute another one forever. Is it correct? Secondly: What is the meaning of "window person" in a logistics flow?, I suppose a Windows person is a Contact or the person in charge of a process or at least a part of itself. I await your help. Any corrections are very well received. Thanks in advance.