no Packages option to click

Hi,

I'm trying to make progress with Create a Namespace per the module "Package an Exchange App" of trailhead "AppExchange App Development" which should help me succeed with the Challenge exericise later;
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however, I'm not able to get to the Change Developer Settings section of the supposed Packages page that I'm not able to get to because Step 1 resulted in no "Packages" option for me to click.

I see only "Installed Packages", "Package Manager", and "Package Usage". Tried clicking closest option "Installed Packages" and doesn't look like it's the right option.

Any help is appreciated.

Thanks,
Tien.

PS Even tried with new Dev Org and same issue:
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