Grid Items

Go to Dashboard >> Appearance >> Widgets.
Add Owner: Grid Items widget in a HomePage Section Area widget area.
Enter the section title in a text field.
Enter the section info/description in the text-area field.
Select the suitable category from the Section Category drop-down option. ( This option works only in the Category option that you selected above. )
Set the number of post count.
Choose the suitable layout under the Section Layout radio buttons.
Then, click on the Save button.