Edit Post Grid > Post Grid Options(Meta Box) > Query Post (Tab)

you can query post for post grid to display based on “WP_Query” supported parameter

Ref: https://codex.wordpress.org/Class_Reference/WP_Query

 

# Post Types:

you can select post type from drop down menu, its also support multiple post type selection. to select multiple item press Ctrl (Ctrl Button on Keyboard) from your keyboard and click each item to select.

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