How to exclude passes from EXR file when using the denoiser node? Situation:

Blender: 2.81a, Cycles
1 Scene, 1 View layer

View layer passes:
Combined,
Normal,
Diffuse Color,
Emission

Using the Normal and Diffuse Color as inputs to the denoiser.
Denoiser outputs directly to Composite node.

Want to write to OpenEXR MultiLayer file:

-Compositor output and emission only.

-but not the Normal and Diffuse Color pass.

How to exclude the Normal and Diffuse Color passes from EXR file?

Thanks.
Just plug in the outputs from the Render pass or other nodes that you need directly to the inputs of a File Output node.

EXR multilayer can have any number of arbitrary layers (use the Add input button on the node to create them), so just create the ones you need for further compositing.