How to allow admins to grant admin permissions to others

Thanks. I didn’t see that the quotes in my php file were different. I did a direct copy/paste of the code you provided, so I’m not sure how the wrong characters got in there.

I went ahead and created ure-suppress-admin-protection.php in my wordpress wp-content/mu-plugins folder using the code below (copied from the file itself):

<?php
 add_filter('ure_supress_administrators_protection', 'switch_off_ure_administrators_protection', 10, 1);
 function switch_off_ure_administrators_protection($supress_protection) {
 
$supress_protection = true;
 
return $supress_protection;
 }

I’m not sure what I’m still doing wrong here, but if I create the file and use the above code in it, the blog still throws a 500 error.

Any idea why it’s still throwing a 500 error after replacing the quotes? Where are the logs located?

Thanks for the reply. I copied (verified) and uploaded the file you provided to my wp-content folder (/data/wordpress/wp-content/mu-plugins) and restarted IIS. I am still getting a 500 error whenever this file exists in the mu-content folder. I have no system logs in /var/log (there is no “syslog” or “apache2” folder there), however I enabled debugging as you suggested and noticed the following fatal error for PHP:
[12-Jul-2018 16:04:32 UTC] PHP Fatal error: Cannot redeclare switch_off_ure_administrators_protection() (previously declared in /data/wordpress/wp-content/mu-plugins/ure-supress-admin-protect.php:4) in /data/wordpress/wp-content/themes/platformpro/functions.php on line 20

This appeared to be a conflict between the settings defined in the php file we uploaded and the code we previously applied to the “platform pro” theme. Once I removed the code from the platform pro theme I was able to upload the php file to “mu-plugins” folder, restarted IIS, and the site(s) now render. We are testing the permissions no to ensure that admins can now grant admin rights to others. I will reply back once this functionality has been confirmed. Thanks.