We have a safety sheet that has all the names of all who have been trained in a certain safety procedure, we have issued them a certificate but that certificate will expire in 3 years. On the sheet we have a trained date column a retrain date column and the 3rd column called status.
In the status column we have it set as a dropdown with "valid" or "needs retraining", when entering their information in the row we manually select "valid", what I would like to do is when the retrain date column reaches the 3rd year date I would like the cell that had "valid" in it to change to "Needs Retraining".... i have tried workflows but just can't seem to make the status column cell change to "needs retraining".
Please help me, thanks in advance.