We use join.me for screensharing. To join the audio part of a meeting, click on the phone icon in the top left corner of the join.me menu. The chat button is next to this.
If you’d like to change your name, you can do so before you enter the meeting or after joining by clicking the person icon in the top right side of your join.me menu.
You can select a local # for call-in in the drop-down menu under the “Call by phone” section. Audio quality is typically better calling by phone than calling by computer.