Thanks for your message, I would be happy to offer you some assistance with this. You can change and edit your slideshow and header areas in Brooklyn by heading to Online store>Theme>Customize in your admin:
Once inside your theme editor, you will see where you can edit these areas on the left-hand side of your screen:
If you are looking for more information on customizing/editing the Brooklyn theme, I would recommend checking out our helpful guide here.
I hope this helps you out moving forward, please feel free to reach back out here with any additional questions, we are always happy to help out!
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