New page does not show in parent

For customer entry create a new page (page type = TabPage)

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It shows up in my tabs on the left, but not in the list of panel cards of the parent on the right.

How do I include it in the list of panel cards of the parent page and also have it available in the tabs on the left?

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Hi,

Have you figured this out?
I have the same question and can’t find the answer.
I’ve converted a classic tab into TabPage and it is available in the tree only.