Silent retreats
An important aspect of preparing to offer mindfulness based groups is to cultivate your own meditation practice through attending an intensive silent retreat. This is a standard prerequisite required by The Center for Mindfulness, UMass, where the MBSR course originated and MTIA.
This page offers links to some Insight orientated retreats being held 2019
www.temoata.org/Retreats
greendharmatreasury.org/teaching-retreat/public-schedule
www.dhamma.org/en/schedules/schmedini.htm
www.dharma.org.au