Do internal account transfer of money from "USD balance" to "Prepaid Card"?

HI,

Maybe I'm missing something and can't find it in this forum:

How do I transfer or move money from my root "USD balance" folder to my "Prepaid Card - XXXX-abcd" folder? this is not a transfer to another person or external account, only internal to my account on Payoneer between 2 "folders" (or accounts)?

thanks!!!

J