The Worksheet_SelectionChange event macro can do both of these for you.
Since you specified BOTH actions occur when the same range of cells is clicked then this event would update the value in B2 and then take you to the "Template" sheet automatically.
1) Right-click the sheet tab and select View Code to open the sheet module
2) Paste in this event macro:
If you don't like the "selection" method, you could replace it with a "double click" event, you would have to double click a cell in the range A1:A100 to get this event to trigger:
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