
Hi @Chriss Haddad,
I refer to the Chrome document which you shared in the original post. Its shows an option to make the extension Private. It does not contain any information about publishing 2 extensions.
I refer to the Microsoft document and got the information below.
Ref: Provide Availability details
So, if you select the Hidden visibility then you could use extension for testing purposes.
The document does not describe whether you could publish 2 extensions, one for public and another for testing.
At a time, you could upload single package. For testing purposes, I would suggest you publish 1 copy of extension and make it public.
Then repack the extension again with the different extension ID. Now you have basically 2 different extensions. You could publish the extension that you repacked and make it hidden.
Note: You would need to test the extension locally to make sure it does not have any errors. If it contains errors, it might fail the validations step.
Best Regards,
Deepak
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.