Have you tried Data validation through lists. What you will do is create a list on your (Tab2) and head back to tab one ( where cells can be clicked). Go to Data > Data validation> data validation . A box comes up where you need to look in the "Allow" part for the list function. There you will select the series where the possible list options are available and set the range. Click ok and return to Tab 1. In the selected area where you chose to create the list to choose from, A drop down box will appear to choose the items you need. Hope this was what you were looking for
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