Content Pillars
Content Pillars are the recurring themes your content is balanced across — for example Education, Promotion, Engagement, Behind-the-Scenes, and Testimonials — each with a target share of your posts.
Open Marketing → Setup → Content Pillars.
Set each pillar’s target percentage, and the Posts view’s Content pillar distribution shows how your actual mix compares — so you keep a healthy balance instead of over-posting one type.