I have solved this for myself by assigning the content individually.  I think I thought there was an automated way around.  Thanks community!

Here’s something that we do for this.  I have a bunch of Power Users that need access to each other’s courses/LPs.  So we created a catalog that they all have access to - it’s not displayed anywhere on a page, but if you assign that catalogue as a resource to these PUs, then anytime they want to share courses/LPs - they are instructed to add said courses/LPs to this catalog. Make sense? 

This way you don’t have to do it for each course/LP.  Good luck!