How do you customaze the "Subscription Confirmed" form of Mailchimp?

Hey guys, I'm a novice at working with Mailchimp and I'd like to customize the form shown in the screenshot below, however, I couldn't find any specific tutorial. Could anybody give some directions? ​ https://i.redd.it/8xxylgch8lj31.jpg submitted by /u/InWisdomITrust [link] [comments]

source https://www.reddit.com/r/Emailmarketing/comments/cxh0qu/how_do_you_customaze_the_subscription_confirmed/