How to insert data in csv in predetermined position

I am trying to figure out how i can insert data in a specific position of a csv file (example in column C row 5). Unfortunately i am not really getting anywhere with this if anyone can help me or point me into the correct direction it would be really appreciated

You would read the csv file, then pass it through a csv node. Then insert the data at msg.payload[4].col3, depending on column names you may use. Then pass back through a csv node to create new csv file. Finally you would resave the file.

Thank you so much for help