ɪt hˈɛld ɪts fˈɜːst kˈɑːŋɡɹəs ˌɔn ˈeɪpɹəl fˈɪftiːn sˈɪkstiːn, tˈuː θˈaʊzənd tˈuː ɪn wˈɔːɹsɔː, sˈɛkənd ˌɔn ˈeɪpɹəl twˈɛnti sˈɪks twˈɛnti ˈeɪt, tˈuː θˈaʊzənd sˈɪks ɪn zˈɛɡəz nˌɪɹ wˈɔːɹsɔː, ænd ˌɔn ˈeɪpɹəl twˈɛlv fˈoːɹtiːn, tˈuː θˈaʊzənd tˈɛn ɪn bˈaɪdɡɑːszkz.
It held its first congress on April 15–16, 2002 in Warsaw, second on April 26–28, 2006 in Zegrze near Warsaw, and on April 12–14, 2010 in Bydgoszcz.