I have an excel file for production units of panels tabulated and is still being populated as additional new panel tab is added in every few weeks. For now i have already 6 tabs with each unique tab name and each tab with unique serial series for panel names under Column B and weight kg under Column F. (all tabs with the same format columns A to F) and with a master tab for final approved panel. This master tab is incorporating the different serial series for panel names for all 6 tabs under Column B, but in Column Q, I want to incorporate the weight kg from all the 6 tabs with just one formula. Can somebody help with how to do the syntax for index match? or if there is a better simple way