Hi, can you please show me how to add these two sections below into my posts?

You might be interested in... both versions please. the version with the thumbnail photos and the version with the text link. 

Thank you, 

Are you able to do this in the block editor? And if so, how do you?

Thanks, 

Yes, I was able to get it working... First, you have to go into your post (fig. 1) and click the Pennews button. The dropdown will appear (fig. 2). Select related posts link, fill out the criteria that you want to show in your post; 

I used this field - Display Related Posts With Post Ids. ( Enter here separated by commas. Example: 12, 14 )

Go to the posts that you want to show in your post and copy the post ID inside of each post URL. Enter post ID, post ID, post ID, post ID,  ---- if you want 4 posts to show or just once if you want 1 post to show, etc. 

Click ok. This should give you your shortcode, now go to your widget or theme builder and click the shortcode block, enter the code that you just generated/copied, and place it inside of your shortcode block or widget and preview your work. You should now see it in your post.