To add post click on Posts > Add New and fill all content about post. and you can add more post to show in home page news section.
News Section Settings:
- Settings ( Enable/Disable )
- Section Header ( Service Section Title, Subtitle, Title Color, Subtitle Color )
- Section Contents ( No of show posts, post category )
- Section Background ( Section Background Color, Section Background Image )
Navigation link: Appearance > Customizer > News Section > Settings