In order to select another opt-in message, first you need to prepare that message. Just like in a normal email campaign, first of all you prepare your message.
In the editor:
Include a sentence, such as: “Click here to confirm your registration” somewhere in the text. You can make the link from this sentence.
First select the sentence. Then click on the personalise icon.
Click on the ‘opt-in link’ button at the bottom of the new window that opens up.
In the wizard:
First prepare your message. Use the value: #opt-in# in the place where you want to put the confirmation link.
Then save the message.
When you return to the registration module, you will see that your message is now in the list of opt-in messages.