How to create a Dependent Pick List
A Dependent Pick List is simply a way to connect Pick Lists together with value dependencies. Lets take an example of Car Make and Car Model.
First, you would create a Pick List with values for Car Make, which are comprised of the following values: Honda, Toyota, Ford, Nissan:
Second, you would create a Pick List with values for Car Model, which are comprised of the following values: Accord, Camry, Mustang, Altima:
Third, you would create a Dependent Pick List that connects the Make and Model.
After adding the Dependent Pick List field into the layout, when you are in a record, you would see the appropriate values for Car Make and Car Model:
Do you have more than one value per dependent drop down? No problem. In our car example, more than one car model per car make can be created. Just be sure to map each model appropriately when you are setting up the drop down dependency:
Here is how that will look in the edit view: