scribu

AppThemes

With the current WordPress administration area, the only way to add existing users to a certain blog is by entering their usernames, one by one. It’s very time consuming.
With this plugin, you can do it in bulk, by using the familiar “Change role to…” dropdown:
<ol>
<li>Go to WP Admin -> Users.</li>
<li>Click the “Entire Network” link.</li>
<li>Check the users you want to add.</li>
<li>Choose the new role from the dropdown.</li>
<li>Press “Change”.</li>
</ol>
Note that you have to be a super-admin to be able to do this.

User Management Tools

Allows super-admins to quickly add users to a particular blog in a multisite installation.

Serhiy Zakharchenko

Did you ever want to add some custom columns to the posts overview page? 
This plugin gives you the possibility to add meta fields, taxonomies, or ACF fields there. 
Just add any number of columns you want and enjoy seeing them right from the posts overview pages.

Posts Columns Manager

This plugins has really helped me and my team to save a LOT of time... 

I use it in combination with ACF in order to display relevant information about my posts or organize them without the need of getting into them...

This might not seems like a big deal if you have just a few posts... but with a large number of them you will really appreciate it.

Thanks to the creator for such artwork :)

Excellent!!!

Did you ever want to add some custom columns to the posts overview page?

User Management Tools vs Posts Columns Manager