If the value of d1 is true and b1 is equal "insert value" than copy value of a1 to b1

Hi,

I am in the process of building a spreadsheet that users the checkboxes to mark a row active. There are many tows in the sheet. I would like the user to be able to "click" a box that says that they are done. This would copy the value in cell a1 to the cell b1 unless it contained a predefined text value if the cell tied to the checkbox is true. I would like a single action to affect all of the cells meeting the formulas specifics. Thanks
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I have uploaded both before and after examples. I have about 20 of these pages in the workbook. The idea is a user fills in the client values and sets it as active. however many people filling this out do not fill it out if they want the default label. I am trying to make it easier by having them select a button to complete the page and it will move the default label into the client value label if one has not been input already.