Luis Rodrigues

If you have a private network where all sites are open to anyone with an account, but still want the ability to invite someone from outside and limit their access to a single site, then Network Restricted Members is for you.
This plugin was developed for our private <a href="http://p2theme.com" rel="nofollow ugc">P2</a> network, which is open to all company employees. However, we still wanted to be able to bring contractors and clients over without giving them access to everything on the network.
<h4>Usage</h4>
Network Restricted Members provides a user setting that allows multisite network administrators to restrict a user to the sites he or she is a member of.
<ol>
<li>As a super admin, navigate to the Users dashboard</li>
<li>Click ‘Edit’ on the user you wish to restrict</li>
<li>Check the option ‘Restrict User Access’</li>
<li>Save your changes</li>
</ol>
From this point on, administrators will need to add this user to their sites before he or she is able to see them.
If you wish to lift the restrictions on a user, repeat the steps above but uncheck the option box instead.
<h4>Other plugins</h4>
Network Restricted Members works best when combined with a network privacy plugin, such as one of the following:
<ul>
<li><a href="https://wordpress.org/plugins/more-privacy-options/" rel="ugc">More Privacy Options</a> by David Sader</li>
<li><a href="https://wordpress.org/plugins/network-privacy/" rel="ugc">Network Privacy</a> by Ron Rennick</li>
</ul>

Network Restricted Members

Restrict user access to selected sites on open multisite networks.

bnovotny

Customize the entire user management experience to your own liking!. Now you can have all user management features in one plugin! Includes New User Approve and Email Verification Features new in 1.5.3.0 and optional lost password security questions. Also allows you to add additional fields of any input type to registration form and profile for better user management and control. Customize the Default WordPress Registration Form & Login Page CSS & Messaging. It also helps reduce unwanted spam registrations. Has anti-spam built in, customize default WordPress login/registration forms both in design and messaging, adds agreement policy and link to policy to registration form for members, can create custom redirects after login and registration, templates for password change and lost password and email verification, custom password strength options, and password update management. Can limit amount of time between password changes and the number of times before duplicate passwords allowed, set minimum password length and also require special characters, upper and lower case letters and numbers so your site is made more secure. New templates allow you to use custom password strength for both lost password and reset password options.
WordPress User Registration Aide allows you to require more fields when a new user registers. This not only can help to stop spammers, but it can also increase your user management capabilities and services for your user base. All the new fields that you add also are added to existing users profiles, but the users will have to fill them out of course, but any new users will be required to fill out these fields if they are included in the registration process. The new fields can be any variety, select, text, radio button or checkbox, and all the standard html input types, and optional if you like.
New in 1.5.3.0 
New User Approve Feature 
New User Email Verification Feature 
Lost Password Reset Form Security Question for added Security. 
All user features are added to the all users table for easy access to approve, deny, resend emails, activate, and delete denied users.
Another important option is that you can also add new fields to the users profile page but not require them for registration, so you can increase you user management capabilities. This is an exciting new feature for Web-masters that wish to increase contact options, communications, and information obtained from your user base.
Plugin Features:
<pre><code>Easy to use
Quickly and easily add new fields to user registration
Add your own custom fields or existing fields like First Name, Last Name & Nickname to the registration form
Reduce bots and spammers with additional fields on the registration form
Get better control over your user base
New fields are added to existing WordPress User Profiles!
Increase your knowledge of, and interaction with your customers & users!
Add Custom Logo & Messages to Registration & Login Pages!
Add Custom Background Image or Background Color to Login & Registration Pages!
Anti-Spam Math Problem
Password Strength Meter
Custom Password Strength Options to Create Your Own Password Strength Definition
Choose custom display name fields for users by roles or for all users
Force New Users to change password after getting password from email
Force Existing Users to change password after specified amount of time
Not allow same password to be used for specified number of times
Optional fields on registration form -- Use or don't use * for required fields
Different input types for fields like checkbox, select, radio buttons, numbers
New User Approve/Deny/Delete Feature
New User Email Verification
Lost Password Reset Security Questions
</code></pre>
Read more: http://creative-software-design-solutions.com/wordpress-user-registration-aide-force-add-new-user-fields-on-registration-form/#ixzz22CCABfOx
Instructions: http://creative-software-design-solutions.com/wp-content/uploads/2017/05/USER_REGISTRATION_AIDE_INSTRUCTIONS.pdf
Instruction Video for using new filters to fix URA custom page template styling issues: https://youtu.be/nar71ttdjVg

User Registration Aide

Adds custom user fields to better manage users & members & customize login-registration page css & messages. Lets you customize the entire …

Network Restricted Members vs User Registration Aide