in DOR, i need to make other fields mandatory based on selecting the first field list of values.

Summary:

I am working on the DOR configuration and have created a DOR (Business Trip Request). There is an attribute called 'Request Type' with values 'New' and 'Extension'. Based on the selected value, I need to make certain fields mandatory. For example, if 'New' is selected as the request type, the fields 'Start Date' and 'End Date' should be mandatory.