To create a new Multi CCT project then use the qacli project create command. To use static CCTs then use the ‑‑cct option multiple times specifying each CCT to want to use. The Default CCT will be the first ‑‑cct option specified.
If you prefer to use Auto CCT, then specify the CCT names as --cct Auto_generate_C and/or ‑‑cct Auto_generate_C++.
Once a project has been created you can modify it using the qacli project modify command. See qacli project create | modify for full details and examples.
For static CCTs, by default, all files will use the Default CCT. You can choose to override this on a per file basis or inherit the CCT from the parent directories by using the qacli project files command with the ‑‑cct option selecting the file you wish to operate on or additionally use the ‑‑folder option to specify which folder to operate on. See qacli project files for full details and examples.