C-School in SELRES?

Seasons greetings all,

I am current AD and recently went through TAPs. The NC1 that spoke to us about reserves mentioned opportunities to join the SELRES and attend c school (or in some cases, a school for those who wished to crossrate). I’m currently an AD HM and would be interested in attending c school while serving in the SELRES, does anybody know how that process work? I was not able to catch the NC1 for questions at the end of their presentation. TIA!