To select sub project while creating Invoice, please follow the steps mentioned below.
Step 1. Select Sales from the home page and click on + Create Invoice.
Step 2. Click on Select project option on top, select the sub project. Below the sub project (Pandara Road Location project) name you can see the parent project name (New Delhi project).
Step 3. Select the customer and products and click on Save to create the Invoice.
Please Note: This feature is only available in Web version.