Remote multicast setup

I’m trying to setup multicast group remotely after device joins.
I have seen certain MAC commands to achieve this from this pdf.

Please let me know how to send these commands to end device [how to form payload and its format, and also using which API].

In the next ChirpStack Application Server release, the FUOTA logic will be completely removed. Currently you can’t send these commands yourself since these are “intercepted” by the ChirpStack Application Server.

When this release is out, you can schedule the above commands like any other application payload. One example implementation is: