Apply code to entire workbook.

Hello all. I have found a Macro online to help me solve one of my issues, but this macro is coded to only work on one sheet and I am wondering how to change it to work for the entire workbook. The code is as follows:

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I am looking to double click a cell in either Column C or G and have it copied to Column I in the same row. As of now this works but only on my sheet titled Week 4.

Any help is appreciated!