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In this part you build the Countries picklist (us, ca, uk) with a Regions level under it, then the Country and Region dropdown fields. When someone picks a country, the region dropdown shows only that country’s regions. It takes seven short steps. You need the Marketing governance model from Part 3: Static picklists.

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How it works

You build a hierarchical picklist in one editor, as a chain of static picklists, one per level. Countries are the first level and regions are the second. Each region sits on the same row as the country it belongs to. When you save, each level becomes its own picklist, named after its column header and linked to the level above. Two dropdown fields turn that into a cascade. Country points at Countries and Region points at Regions. You never tell Region which field to depend on: the field editor finds the dropdown that uses the parent picklist and links them for you. That is why Country comes first. Until a country is picked, the region dropdown shows Select "Country" first instead of options. For the full rules, see the hierarchical picklists reference.

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Steps

1

Create the Countries picklist

With the Marketing governance model open, click Picklists in the sidebar. Click Create new, then choose Static Picklist.Click the Name column header, type Countries, and press Enter. This header names the first level’s picklist.
2

Add the country options

Add three rows. Type the code in Code and the display text in Label, the same as Goals in Part 3.These are your parent options.
3

Add a second level for regions

Click + Level, the last column header. Its tooltip reads Add level. A new column pair appears with the header Level 2.Click the header, type Regions, and press Enter. Each row now holds one path: a country on the left and one of its regions on the right.
4

Add the region options under their countries

When you finish, the grid in Flat view looks like this, one row per region:Start with the first region on each country’s existing row. Type ca / California next to us, on / Ontario next to ca, and eng / England next to uk.Then add the rest by duplicating. Right-click the country’s last row (the one with the region you just entered), choose Duplicate row, and change the copy’s region code and label. The copy lands right below, so a country’s rows stay together, in the order you add them. Do us first (ny, tx, fl), then ca (qc, bc), then uk (sct, wls, nir).
Check the country code on every row. The parent sits on the same row as its region, so a typo like usa instead of us raises no error. It creates a fourth country, usa, with that region under it. The editor does flag a region row with no country (“All parent levels must be filled”) and a country whose rows are split up by other countries.
Switch the toolbar from Flat to Grouped. Each region now appears nested under its country, which is the quickest way to spot a stray row before you save.
A child code only has to be unique within its parent. ca is both Canada’s country code and California’s region code, which is fine because they sit on different levels.
5

Save the picklist

Click Save. The editor saves two linked picklists, Countries and Regions, and both appear in the Picklists list.Once campaigns are running, avoid reworking the levels of this picklist. Every region is tied to its country, so moving regions to other countries means remapping existing records.
6

Create the Country Dropdown field

Click Fields in the sidebar, then Create new, and pick Dropdown. Set Name to Country. In Picklist, select Countries. Click Save to draft. The Country field appears in the field list.Leave Enable multi-select mode off. A cascade needs exactly one country at a time to decide which regions are valid.
7

Create the Region Dropdown field

Click Create new again and pick Dropdown. Set Name to Region. In Picklist, select Regions. Leave Enable multi-select mode off here too. Click Save to draft.The editor links Region to Country automatically. Once it does, the multi-select toggle on Country locks with “Not available when there are other fields that depend on this field.”If you create Region before Country, the editor shows “The picklist requires a parent dropdown to be created first.” Create Country first, then come back.

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Check your work

  • Two linked picklists exist: Countries with us, ca, and uk, and Regions with four regions under us, three under ca, and four under uk.
  • Two new fields exist: Country (Dropdown on Countries) and Region (Dropdown on Regions, cascading from Country).
  • The governance model has six fields in total: Campaign Name, Launch Date, Destination URL, Goal, Country, and Region.

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Next up

You have your first cascade. In Part 8, picking United States filters the region dropdown to the four regions under us. The stored values are the codes (us, ca), which is what Part 6’s UTM Campaign field splices together. In Part 5: The UTM cascade, you build the same kind of hierarchy for UTM mediums and sources. For the standalone version of this cascade, see the cascading dropdowns recipe.