I did not say that Stepinac was present at any forced conversions. He had no need do it, he was an Archbishop.
"Presided over forced conversion" means that he was supervising the process that was an official Nazi state policy.
In July 1941, Mile Budak, Minister of Education and religion of Nazi Croatia, publicly declared the aim of Nazi Government:
Croatian Nazi Mile Budak, who was a Minister in the Ustasha regime in Gospic, Bosnia during July 1941:
"We will kill one third of the Serbs, expell one third ,and the remaining ones we will convert to the Catholic faith, and thus make Croatia 100 % Catholic within 10 years. "
This genocidal intent has been carried out since April 1941. Croatian Nazi state had had means to murder and expell, but had no means to convert to RC faith WITHOUT Vatican and RC Church.
One may say that Vatican had no power to stop murder and expulsion, but the all power to stop forced conversions was in Vatican hands.
One may claim that Archbishop Stepinac was not aware what was going on and did not report it to The Holy See.
Unfortunatelly, not true. Bishop of Mostar informed him of what was going on
Second of all, the "forced conversions" were actually Serb peasants who ran to the aid of the Church in order to protect themselves from Ustashi attacks.