Add a Super Admin User in phpMyAdmin
Sometimes when you work with WordPress multisite network you may need to create a super administrator user not from the dashboard, but from the database with the help of SQL queries.
And in this tutorial I am about to show you how. There are actually only two steps we need to do:
Simple User Sync
The plugin allows to automatically create users on multiple WordPress websites and then sync their profile changes between selected sites.
Add a Sortable User Registration Date Column to All Users Page
There are could be different situations in WordPress when you will need to sort users by registration date. For example you may notice that spam users has been registered recently on your website and it is kind of difficult to find them in your users list because by default it is sorted alphabetically.
In this tutorial we are about to create a “Registration date” column just like on the screenshot below and of course, what is most important we are going to make it sortable.

In order to implement this feature we don’t need to use any plugins (but we could of course), all we need to do is to use three WordPress filter hooks:
manage_users_columns
– to add a columnt to All Users page,manage_users_custom_column
– to display the registration date inside it,manage_users_sortable_columns
– to make it sortable.
Let’s get started!
If you don’t know where to insert the code from this tutorial, please check this guide.