When you create a case, you can add optional fields such as National ID Number and Cell phone number by clicking Show optional Fields.
And to hide these fields, click Hide optional fields
If you enable Case Access Control, National ID Number is automatically displayed for Electronic ID and Cell phone number for Sms verification.
If you want the Company name to appear, you must enable Show Company name for each party in the settings of the case.
Then the field for Company name appears.