[ by Melanie Gretchen ] FINRA sanctioned a MetLife registered principal who had been serving as field supervisor and registered principal at its branch in Ovieda, FL, for repeatedly failing to adequately supervise a registered rep.  For starters, he reviewed the application for, and approved the opening of a joint brokerage account that was shared by a branch RR and a firm customer. Principal's Professional Background. Jason Dayton entered the securities industry in February 2002 until his resignation in December 2009.  He served as an assistant operations manager in 2005 and 2006, before 2 years as sales manager, beginning October 2006.  In June 2008, he stepped down and became a financial services rep until he resigned in December 2009.  He also served from October 2010 until April 2011 on a temporary assignment in the MetLife Orlando branch office.  He held Series 6, 7, 24 and 66 licenses. FINRA Findings and Allegations - Failure to Supervise. In March 2005 a firm customer, 82, opened a joint brokerage account with a registered rep ("RR") employed at MetLife.  She also had a trust account at the firm, that had been opened previously.  The RR who shared the account was not the RR assigned to the account. As a registered principal of the firm, Dayton was responsible for, among other things, supervising accounts handled by a particular RR - the one who was handling the joint account in question.  Supervision included approving new account openings and periodically reviewing the accounts to ensure they were in compliance with firm pols and procedures. Later, Dayton admitted that he signed and approved the application for the joint brokerage account - in his capacity as both a field supervisor and registered principal.  And, he acknowledged that the firm prohibited joint accounts between customers and any RR's unless they were family members.  Having failed to examine any documentation prior to the opening, he did not catch the violation of firm policy. Dayton allowed the joint account between MR and AL to be opened and remain active while he worked in a principal capacity through October 2006.  In fact, Dayton permitted the account to remain open even though he was responsible for the supervision of the account and assigned RR, and the account had been marked as a joint account between a Firm customer and a Firm registered representative who were not related. Elderly Customer Dies - Violations Disclosed. In September 2009, the elderly female customer, with whom the MetLife RR shared the joint account, passed away at age 87.  She had no known relatives or family.  Three months later, in December 2009, MetLife received a letter from a trustee representing the trust account, expressing concern about the rate of withdrawals out of the trust account that occurred from December 2008 through September 2009.  MetLife launched an investigation and discovered the joint account in violation of firm policy. FINRA Sanctions. Dayton agreed to a $5,000 fine and a 20-day suspension to settle FINRA charges regarding his failure to adequately supervise. For more details, go to [FINRA AWC #2010021224802, January 2012].