Need to search for a specific string in Column A and delete values within the same row

Hi all,

I have a spreadsheet with values in Columns A:AP. Most of these values in Column A are 4 digit numbers but once in a while the value will be "Group key". The number of rows in the spreadsheet varies from week to week, as does the placement of the cells that read "Group key". It will always be in Column A but the row number is impossible to predict. Also, there can be multiple instances of the "Group key" cells in the same spreadsheet. What I need is a code that will find ALL instances of "Group key" in column A, and then clear the values in columns D through AP within the row that the cell with "Group key" is found. I know how to write code to delete the entire row, but I need to keep the row and just clear values in the columns I mentioned.

Thanks for any help!