Having the option to put all users under the same main number with no individual numbers, just extensions

Hi Lyan, for feature requests, please post it in our Ideas Portal at https://ideas.ringcentral.com/. You can also vote for the second feature that you mentioned here.

I have seen few organizations that required individual numbers apart from internal extension numbers that help them to communicate from different branches.

But as per your requirement you can always post a feature request here: https://ideas.ringcentral.com/