Hi all,

I am creating a attendance tracker. I need your help for the
completion.

I am looking for a control which can track the changes. To be more
specific, If a person updates the data in the sheet once, it should be
locked. The next time, he/she should not be able to update it. It
should be possible only with a controller who can in turn give a
password and then make the necessary changes. I am not using any macros
and it runs only on formulas. Please help me in this for the completion.
I am already breaking my head for this.

Your help is appreciated,
Thanks in advance,
Praveen :)


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