<prompt> Translate the following text to EnglishKwa kuongezea mikutano ya kila robo mwaka, mikutano isiyo rasmi na mikutano ya simu hufanyika kati ya wanachama kwa msingi wa ad hoc kujadili masuala kama vile kusaidia vyombo vinavyoshambuliwa.  <response>: In addition to the quarterly meetings, informal meetings and teleconferences are held among members on an ad hoc basis to discuss issues as they arise, such as assisting entities under attack. 