Automatic rate change after the first contract period

Set a rate for the first contract period and a subsequent rate for a subscription. Have FITsociety automatically switch to the agreed subsequent amount and corresponding payment frequency after the end of that first period. Support, for example, a favorable rate during the minimum contract duration, followed by the flexible monthly rate, or a single payment for the first three months followed by monthly payments. Display the transition date and optionally offer advance notification, so that this does not need to be tracked manually per member or resolved with two consecutive subscriptions.