How to add auto prefix for Zero App field URL

Hello,
I´d like to create several user profiles at ZA.
Each user should have a possibility to add a www, e-mail and phone number. I would like to avoid situation, when user inserts only something like mypage.com, which will create a link leading nowhere (let´s say the main page is https://profiles.com and adding a simple mypage.com will create https://prosiles.com/mypage.com).
So - how to add https:// for a web adress, mailto: to an email adress and tel: to phone number?

Thank you and best regards.

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