You may manage your blog’s users from the WordPress admin area.
WordPress User Roles and Permission Management Explained
The Dashboard Access plugin is a fantastic tool that allows you to restrict access to your dashboard. This article will show you how to install and use the plugin, as well as how to change its settings. To configure the plugin, go to Settings > Dashboard Access. You can limit dashboard access by role: selecting only administrators, editors, and admins,
To delete all users, go to Users -> All Users, and then click on Delete.
Multiple Administrators are allowed on your WordPress site. Having several Administrators on your website can significantly make your job easier in maintaining it. WordPress website owners may find themselves becoming the bottleneck in their own success path, whether they believe it or not.
We first verify that the user is really logged in. They won’t have a role assigned if they’re not logged in. If the user is logged in, we use wp_get_current_user to get back the WP_User object. This gives us access to a stack of data about the data and allows us to see their user
Use the current_user_can function to see whether the user currently logged in is an administrator. To see if a user is an administrator, use the current_user_can() function with the capability as an argument (e.g., manage_options).