How to add node in blueprint?

Development Programming & Scripting
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1

I am a C++ programmer and unfamilar with blueprint. I am following this instruction to modify blueprint of metahuman

Apply Live Link Preset to MetaHuman Blueprint

The Live Link Preset can then be applied to a client in the BeginPlay event of the MetaHuman Blueprint. Create a Live Link Preset variable in the Blueprint and pass that to the Apply to Client node

Here is my blueprint

image
image1920×1355 202 KB

Where can i add the Apply to Client node? I cannot find it in context menu? How to pass a variable in blueprint?

Unreal Engine v5.3.2
Audio2Face v2023.2.0