Lock formulas in column, protect sheet, add and delete rows

[tropics123]

Hi, we have an Excel sheet which we send to the client for them to type in data for their employees and they're always messing around with the formulas in column G. We're trying to find a way to lock the formulas in column G, but still allow the client to add new rows by copying and pasting the existing row and bring down the formulas in column G. I've tried to lock the formulas in column G and then protect the sheet and allow user to add rows, but because column G is locked it wouldn't allow pasting a new row.

Does anyone have suggestions? Thank you in advance.