17.10 Linked picklist editor

Configuring Linked Picklist fields means establishing a dependency between the values of two drop-down menus.
For example, the Invoice field will propose the content based on the previously selected value in the drop-down Status menu. To create a new link between two picklists from Settings > Linked picklist editor, select the reference module and then indicate the pair of picklists to link.

Fill in the dependency matrix:

The first line (table header, in bold) shows the values of the first picklist. Below each value, you must activate the desired values for the second picklist in the respective column.
For example, when you choose the Invoice value in the first picklist, the second picklist will propose the values you have activated in this matrix in the Status column.