Step1: Choose the template and get into the builder.
Step2: The Last tool of the toolbar at the left corner of your page presents an option reading 'Page Loader Settings'.
Step3: Click on 'Page Loader Settings'. With this, you will get a toolbar at the right corner of your page to choose the loader format.
Step4: Choose the format for loader and then click 'Set Loader'. With this, the loader will be set for your page.