Can't use Paragon Character's Skills

Hey, I’m very new to the UE4 and want to experience with Paragon’s characters. Here is the problem I can only use 3 attacks move them and can’t use their skills. How can I fix that problem?

Their skill animations are included but the use of the ability aren’t included in the blueprint nor are the animations equipped with the necessary Trails and Particle systems. You have to add them yourself (in which the particles and trails are included in their own folders within the assets. Greatest part about it is you can take the skills and create them to your hearts content. Your best bet is to research the skills if you don’t know what they are and then research the necessary information that would make the basis of the skill work (AOE, Projectile ect…).