When you get a charge
The earnings of paramining happens every 24 hours, every day, from the moment you first deposit the PRIZM coins for paramining. You will find out about this when a day after this operation you receive a notice of admission. You can re-enter these coins for paramining, and also make a new top up to reinvest your budget. In this case, the time of interest accrual remains unchanged and the percentage of newly instituted coins will take effect after notification of the percentage of paramining. And after 24 hours, you will receive an updated percentage from the deposit amount you increased.