How Do I Add Single Content 1

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Select your Settings
Source: Related Content
Select Related Content Set: Custom
Edit: Search for and add the page you would like to display
Layout: SingleContentBlock1
View All Label: This will be the text shown on the Block's button, if you leave this field empty then it defaults to 'More' (or the equivalent relevant translation)
Heading Tab: Add a Heading to your Content and select the Heading Tag (H1, H2, etc)