Add the highlighted nodes shown below, location at the top of the screenshot.
Then go to the location shown in the image below and add the highlighted nodes shown in the image.
You will then need to set your naked/no equipment skeletal meshes for your character, I have added a note to the select node where you need to set these meshes for the different parts of the character.
You will also have to go to the character blueprint and set the Head, Chest, Legs and Feet skeletal mesh components to your naked meshes. You may also want to select the Mesh (Inherited) component and tick Hidden In Game in its settings.