How to add caption in content settings

Hi Community,

I’m a new user. How do I add the caption in the content settings.

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Thanks so much!
Enoch

Looks like you’ve already done it.
Is it not working as you expect?
What are you expecting to see?

Sorry, i mean that is my old project, now i want to build a new project, but the caption is not in the content.

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Which component is that?
Are you using Pages or Apps?

i using apps

and…