NvJpeg choose processing block

NVIDIA Jetson Orin NX 16GB, Jetpack 5.1.2, L4T 35.4.1

In the documentation to jpeg it says:
The processing block consists of a hardware engine with two instances of NVJPEG hardware:

Can I manipulate between 2 process units ? For example: I have 2 threads, and I want that each thread use own nvjpeg units. Can I do this?

The engines are selected automatically and it is not supported to manually pick either engine. If loading is high, the two engines are supposed to be online automatically.

Do you plan to add a choice of nvjpeg unit in the future?