This procedure uses the example scenario from Creating an expandable section for custom tools.

You can group similar tools (for example, Worklist tools) in an expandable section.

To add a nested page and label, perform the following steps:

1. Under the Set row that specifies pyExpanded equals "true", add a Comment step.
   1. In the Action column, select Comment.
   2. Enter your text.
      For example: @******** Worklist Tools *********@
2. Add a new page row.
   1. In the Action column, select Append and Map to.
   2. In the Target column, enter .pyRulesAndToolsList.
   3. In the Relation column, select a new page.
3. Add a new page row.
   1. In the Action column, select Set.
   2. In the Target column, enter .pyLabel.
   3. In the Source column, enter the subcategory name. Be sure to include the quotation marks.
      For example: "Worklist tools"