Second Trustee

I notice in the minutes of meeting described in the Redemption Manual filing intructions, it shows a signature line for a second trustee. I'm not sure if it was earlier in the book or another source but I remember something talkinig about only needing a second trustee for the UBOT not the SPC trust. A second trustee is not mentioned/described in any other documents in the "SPC TRUST INSTRUCTIONS" that I recall, and I would personally prefer keeping my obligations to myself. I'd like to clear this up and understand if a second trustee is a necessary evil, and also, if a second trustee is required, who should I consider and what criteria should I have? Thank you to anyone who can offer advice on the matter.