How do you stimulate the vagus nerve for depression?

Could you please elaborate on how one might go about stimulating the vagus nerve as a potential treatment for depression? Are there specific techniques or methods that are commonly recommended or practiced? Is there any scientific evidence to support the use of vagus nerve stimulation for treating depression, and if so, what are the potential benefits and risks associated with this approach? Additionally, who would be best suited to undergo such a treatment, and what kind of medical supervision would be required?