In the umbrella sampling section their is no NVT minimization step described?

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In the umbrella sampling section their is no NVT minimization step described? Why is it so. And is it required to do it or not.

The NVT equilibration had already been done to prepare the .pdb file provided in the tutorial (How to apply pulling force in one helix of a single chain globular protein to perform SMD? - #10 by jalemkul)