Add DAHDI Parameter from FREEPBX GUI

Hello Friends,

Current installation from ISO
Asterisk 13.9.1
freepbx-13.0.127

FREEPBX Admin > DAHDI Config

I used to add Asterisk parameter manually in this file
which is now Automatically FREEPBX generated:

The old location corresponds to /etc/asterisk/chan_dahdi_groups.conf

How can I add parameter
immediate = no

from GUI so that it doesn’t get overwritten.

Under DAHDI Config > Global settings
there is a textbox to add custom param but this is not a global setting
and only specific to a particular PRI Card Span.

If you edit the SPAN Settings, it doesn’t have similar textbox.

Thanks

Can someone guide me?