Setuping a staging and production environment using Forge

Hi all ! I'm using Forge for my Laravel app and I have created a single site without wildcard. For example mysite.com I've linked this to my master branch on Github and developed all the things. Now that it's ready for production I'd like to enable a staging environment where I'll work on new features and bug request when it will be online with a staging branch and push it to dev.mysite.com

So I'll have 2 sites =>

• https://www.mysite.com (Production) - master
• https://dev.mysite.com (Staging) - staging

I have bought a SSL wildcard domain that is installed on the Production site

My question are

• Should I needed to create the first site mysite.com with wildcard or do I need just to add dev.mysite.com as a new site to get it up and ready ?

Thanks