How2 make group calls?

Hi all there. I’m pretty new using Jitsy, and I’d like to find a feature I’ve used in Workplace Chat, that’s I can issue a group call on predetermined people, and they have just to press a green button to join. Is this a thing that can be obtained with Jitsy? As of now, I start a meeting, get an invitation link, and share this link with WhatsApp. Designed attendees then tap on the link, install Jitsy if necessary, and join the meeting. It would be nice to be polled and join simply tapping a freen button!