Happy to assist.
To avoid confusion if it does come around:
this is not a package of three Multiple Pilot Training Certificate objects that can be traded in-game; it is automatic application of 90 days of multiple character training capability on the second training slot of the account that makes the purchase. It cannot be sent to a separate account from the Omega subscription it is paired with.
However, you can have the 90 days moved to the third training slot if the second is already active (such as through previous use of an MPTC bought off the NES or from other players via the market) - but you have to open a support ticket right after the purchase to make this request, and a GM must then manually move it to the third slot so you can train all three character slots on the Omega account at once. You cannot have it split between the second and third slots - it must all apply to a single slot.
All standard restrictions on multiple pilot training apply from there (account must remain Omega to train multiple slots; when a training slot expires, the character in training with the lowest current SP value will pause training automatically; etc.)