Give non-admin users access to php 'Additional configuration directives'

[HostaHost]

Is there any way to give a reseller or customer access to the php custom settings box labeled "Additional configuration directives" on the website & domains -> php settings button that an admin can see and alter? We have attempted to give resellers the "Common PHP settings management" and "Setup of potentially insecure web scripting options that override provider's policy" options, but it still does not show up to a reseller.

 

[IgorG]

It is impossible. According to Administrator's Guide:

Note that additional directives are available only to the Plesk administrator. Your customers do not have a corresponding field in Control Panel.