USA, Desktop - RingCentral Phone, Latest Version

I want to add recipients to a SMS/Text message I plan on sending out to many people. These recipients are not in my address book. Previously, I added recipients individually.

I just tried to copy/paste the recipients from a column in my excel, hoping it would individualize each number. It didn't do this. It created one endless #.

Is there a way to do this?

Is there a way to create a group for those who I've added?

Is there a way to make sure the SMS/Texts are sent individually, and not as a group Text?

Thank yo.