In PLAXIS V20,V21 and V22 there is included PVD drain. But How can I simulate Stone column in PLAXIS 2D v21 ?

Greetings to whoever reading this, I'm modeling construction of a pre-loading embankment on soft soil, to be improved by pre-loading and PVD's, to get the ultimate consolidation settlement and the time needed for it under the effect of the embankment…