Horde admin page url

Operating System & Version
centos 8
cPanel & WHM Version
v96.0.14

M.K

Registered
Aug 8, 2021
2
0
1
Egypt
cPanel Access Level
Root Administrator
URL : /horde/admin/
already fixed it with changing
Code:
$conf['auth']['admins'] = array('[email protected]', );
but i try to give horde privilege to create mail box
it give me that note :
Code:
 Adding users is disabled.

Your authentication backend does not support adding users. If you wish to use Horde to administer user accounts, you must use a different authentication backend.