Hello thank you for the help in advance 
I am trying to get all Players to be able to inflict damage on the enemy below. I found changing the Player Index on the Set Player Pawn below would allow only one of the four player characters to deal damage to the enemy. How can I call on all four players for this?
Thank you!
Are players the only ones that use the “BP_Sword001”?? If so just remove the cast to player stuff, remove the IsValid for the player pawn that’s kind of weird to check. Who would swing the sword if not a valid player?? Just go direct from “overlapped actor” → cast to sword → deal damage. Then anyone with a sword can deal damage. If you are new to UE4 this set of tutorial may help you get the hang of the basics.
Thank you that got the damage working 
Only issue now is that the sword always does damage now instead of only when using the attack animation on the character. How would I go about fixing that?
And yes I am very new to blueprints sorry xD Ill definitely watch your tutorials thank you
