Like Google Meet or Skype, Zoom allows participants to use text chat to send messages. Click on the "Chat" button in your menu bar to open the call wide chat panel. Type what you want to say in the text box at the bottom of the screen, then press Enter to send your message. This will allow everyone on the call to see what you have to say.

This is useful for sharing things like links to websites or making sure everyone has information during a meeting.

Source: Blog-News-Technology