Hi @Royal1 ,
I don't think there is a way to do this using Out-Of-Box software.
The SC Order Guide widget and the rules base would need to be modified. It could be possible to disable the input by adding a "Mandatory" flag to the rule base and using it on a copy of the SC Order Guide widget.
To get more information
Mandatory Rule Base in Order Guides - ServiceNow Community
If my response help please mark it correct or helpful.
Regards
Mohan
