The “Custom form” helps you to design the form as per your need. Kushal does not ask for any table selection for this type of Form. It will just create a blank form to which you can add controls like Data Grid and configure its properties manually.
To create Custom Form
Click on New Form button.
Select Custom Form in the drop-down.
Click on Create button.
Design the Form according to your requirement using Controls [Give hyperlink to controls] provided by Kushal.