I'm trying to set Outbound Caller ID for our new Zoom Phone account. 

Firstly, why is there no default setting for all accounts to use one number, I can't seem to find anything. Anyone who doesn't have Outbound Called ID set cannot make outbound calls.

Secondly, when I got into each user and look at the Outbound Caller ID dropdown, there is nothing I can select. In our Phone Numbers section there is the initial number we got on Zoom Phone sign up, and 2 pending numbers which are porting in. the initial Zoom Phone number is working fine. To set the Outbound Caller ID, I have to add it in as a Custom number. Then after that the  Outbound Caller ID dropdown is populated and I can now select that number, and then remove the custom number. seems too round about. Where do I set the dropdown selection?

Is everyone on my team required to get a user license? Or do I just get a license for myself and then assign additional phone lines to my team? I don't understand if each person needs a license and extension first before we can add an additional direct phone line for them.

I have recently come across an issue using my zoom phone.

I will enter a phone number ex. 415-555-1234

Zoom will automatically enter a (1) at the beginning of the number but it is not visible and, therefore, you cannot remove it.

I am having issues because sometimes I get an automated msg that says "the number you have dialed is not long distance. You do not need to add a 1 in front of the number" and then the call won't go through.

Just now, I had a voicemail automated attendant that said "in order to leave a message for the client, please enter their phone number and area code" - this is to cut back on spam messages I assume. When I entered the number, the auto attendant said " 1 415 555 1234" is not a valid number. I didn't enter the 1.  Zoom did this on it's own.

help.