to create a sub project for a parent project please follow the steps mentioned below,
Step 1. Click on the Project option from the home page and click on the + Create Project.
Step 2. Please enter the Project name, select the Parent Project Name, and enter the allocated Project Funds, and click on Create.
Step 3. Now click on the parent project to view the sub project associated with it.
Please Note: This feature is only available in Web version.