Step 1: Open the Step 2: Give a name to the group created and add the desired contacts Step 3: Now open the group chat box and tap on three dots in the top right corner and select Settings>Group link Step 4: Turn on the toggle for Group link and tap on "Share" Step 5: Now open the WhatsApp group chat and paste the group link Now anyone with access to this link can chat in the Signal group created by the admin. Signal revealsthat the admin can turn off the link at any time they want. Not just WhatsApp, but the admin can share this link on other apps to get the users onboard.