Enable / disable and manage related posts
POFO has options not only to enable / disable related post globally but also to set it on post / portfolio level.
Enable / disable related post globally for whole website.
Please refer this article for more information: Theme Customizer > Layout and content > Post Single
Enable / disable related post single post / portfolio wise.
Follow below mentioned steps, same steps will be for portfolio.
Step 1: Go to WordPress Admin > Posts > Add/Edit Post.
Step 2: POFO post settings > single post settings > related post section. See below image for more information.