This manual is designed to assist hiring managers with appropriate hiring processes and Human Resources practices. Can a trustee resign?What if the acting trustee dies or resigns or can no longer be the trustee? Dear, It is a must to issue him a reliving letter, resignation acceptance letter, experience letter as per your co. Once completed, note the SST number and come into our office to finish the process. Santa Clara University's Acting President Lisa Kloppenberg responded to the message earlier today (below) about the resignation of President Kevin O'Brien, SJ.