How to process the work flow to meet the business rule accordingly?

1. Building the Main Power App:

• Data Source: Connect your Power App to the same data source used in your SharePoint workflow (e.g., SharePoint list, Microsoft Dataverse).
• Form Design: Create a form in Power Apps that reflects the fields from your SharePoint form.
• Business Rules with Power Apps Formulas: Implement the logic from your SharePoint workflow using Power Apps formulas. Here's a breakdown for your scenario:
  • Use a control like a Radio Button or Dropdown to present "Reject", "Submit for Approval", and potentially "New" options if applicable.
  • Include a formula that checks the current status of the item (a field indicating "New," "Rejected," or "Submitted for Approval").