Customiszed target file not supporting concurrent execution?

Hi!

I try to generate my customised target file by following the official tutorial, and my target file(qing_ert_target.tlc) is derived from ert.tlc.

When I try to test my target file with a sample model, I meet a error:

The selected system target file '**.tlc' is not currently supported
for concurrent execution.

My questions are:

1. How can I create a customised target file supporting concurrent execution for the multicore architecture?
2. Is it possible to generate C source codes derectly from simulink for concurrent execution for Linux environment?

My MATLAB version is 2019b, and my customised target file is attached below.

[Qing Liu]

Partly solved by the official doc

https://www.mathworks.com/help/rtw/ug/support-concurrent-execution-of-multiple-tasks.html