Running Greater Nephalem Rift and I was unable to select 2 ‘Fallen’ while still able to select other demons and locations. I have a video of it but I don’t know how to attach it. 
First you must upload your video to a free video-hosting website like YouTube. Then, using the URL to your video, follow the instructions below.
To post a link:
- Paste the link in your post.
- Select the link you just pasted and click the </> button on the Reply Editor toolbar.
- Click Reply.
Your link will look similar to this: https://youtu.be/vuA04vSRH9M
It won’t be clickable. But, others can select it to copy/paste in a new tab.