Add people to call/share meeting info with others

There is no easy way to add participants to an ongoing call, especially when using the PWA application for a one-to-one call.

When you initiate a one-to-one call from a chat window in the PWA application, a "Join" button appears. However, if you need to invite another participant, there is no straightforward way to share the meeting link or add that person to the ongoing call.

In contrast, the embedded Sametime chat window displays a meeting link instead of a "Join" button, making it easy to share the link with additional participants.

In summary, we need the ability to invite, add, or directly call additional participants during an ongoing call, without having to end the current call or start a new meeting.