Let say book1 got these fields in sheet 1 and book1 is a password
protected file.
A1 = "Number"
B1 = " Name"
C1 = "Place"
D1 = "Time"
Then book2 got these fields in sheet 1 and this book2 allows every user to go in
to update their data
G5 = "Number"
G6 = "Name"
H1 = "Place"
H7 = "Time"
After they fill up the data and click the button in the sheet1 of book2, it will
automatically update the record in the A1, B1, C1, D1 in the book1 without
opening the book2. Hence, the book1 must prevent duplicate record.
How should i do?