File: https://docs.google.com/spreadsheets/...
Financial models: https://www.smarthelping.com
Explains how to build dropdown lists with more than one tier of dependency. This means pick a variable, a dropdown populates based on that, then another dropdown populates based on the above selection that was based on the selection above it. Example: Select Ford, then all 'ford' list populates and then pick from that populated list and based on that pick, pick from a final list.