WHAT DOES YOUR OBLIGATION ENTAIL?
1. CHOOSE THE 2 HOUR SLOT (while awake) DURING WHICH YOU WILL BE EXTRA CAUTIOUS TO AVOID EVEN A TRACE OF FORBIDDEN SPEECH- SPEAKING, LISTENING, READING &  WRITING.
2. THE HOURS YOU CHOOSE SHOULD BE AT A TIME WHEN IT IS RELATIVELY EASY FOR YOU TO BE SHOMRAY LASHON HORA, NOT " A CHALLENGE".  REMEMBER YOUR PURPOSE IS TO HELP THE PERSON IN NEED. TO DO THAT, YOU WANT YOUR PART IN THE MISHMAR TO BE AS PERFECT AS POSSIBLE.
3.  ON THE FLYER YOU RECEIVE, THERE IS A "KABBOLO" YOU CAN SAY AT THE BEGINNING OF YOUR MISHMAR EACH DAY. FORGETTING TO SAY THE NUSACH OF THE KABBOLO DOES NOT INVALIDATE YOUR MISHMERES. THE MAIN THING IS THAT YOU HAVE NOT SPOKEN ( LISTENED TO, ETC.) LASHON HORA DURING YOUR TWO HOURS. HOWEVER YOU SHOULD BE SURE TO SAY THE KABBOLO AT LEAST ONCE AT THE  BEGINNING OF THE TWO WEEKS. AS AN ADDITIONAL PRE CAUTION IT IS ADVISABLE TO MAKE  A ONE TIME KABBOLO STATING THAT YOUR  2 HOURS SHOULD ALWAYS BE  FOR THE  Z' CHUS OF THE PERSON WHOM THE MISHMERES ORGANIZERS HAVE ASSIGNED TO YOU. THIS WILL COVER YOU, IN CASE YOU FORGET TO SAY THE KABBOLO AT THE BEGINNING OF A NEW 2 WEEK MISHMERES.