Today I will talk about a little trick on the creation of default groups in SharePoint sites.
Usually, creating a SharePoint site, several groups are created such as “Site Name” visitors, members and owners.
However, if you create your site through PowerShell, these “site name” groups are not present.
In order to easily have them, you can use the page at the url « weburl/_layouts/15/permsetup.aspx».
Hope this helps.