To upgrade certain pages that you manage in your ManyChat account to the Pro plan, you must click the blue "Upgrade to Pro" button on the left panel:

Then this window will be displayed:

Click "Upgrade to Professional Edition", provide your billing credentials, and click the "Pay" button here:

That's it-the page should immediately become Pro!
PS:If there are any problems, please refer to " Unable to upgrade account to PRO "One article.