According to the RIDAC (Risk, Issue, Decision, Action, and Request Changes) record entries for a project document, the RIDAC workflow can be modified by using the Workflow Editor, which is a graphical tool that allows you to create and edit workflows. The other options are not correct, as they are not recommended features for modifying the RIDAC workflow. The Project Form is used to create and update project records. The Flow Designer is used to automate processes without coding. The Service Catalog is used to order items and services.