How to make fields mandatory in ADFDI template?

Summary:

While entering the costs for Projects through "Create Nonlabor Costs" Template user needs to make the Raw debit account and Raw Credit account fields as mandatory in the template. And also create a rule to restrict the user from entering the wrong accounting combination.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

25D

Code Snippet (add any code snippets that support your topic, if applicable):