EVM430-FR6043: EVM430-FR6043

Tool/software:

Hello all.
I am new in MSP430.
I am working with the EVM430-FR6043 for create own gas meter.
The USS program works very accurately with the EVM430-FR6043 and a our pair of piezoelectric transducers.
Now I want to make changes in the source codes of USS program, then compile them in среде CCS and work with the own program versions.
TI's support gave me these references:
dev.ti.com/.../node
dev.ti.com/.../node
But I still do not understand how to use it to resolse my task.

Please suggest me how to find step by step guide to resolve the task described above.

Thank you.
Best regards,
Viktor.