I would suggest to create an Automation script - save that and schedule that to run.
You can then see the command line arguements to run a script file:
Then save the automation script:
Then schedule that via:
Then you can see the command line syntax:
"E:\Program Files (x86)\Dell\Toad for DB2 2016 Suite\Toad for DB2 6.2\toad.exe" -batch=true "D:\Misc\SQL\aus1.tas"
You can see that -batch=true is the first parm
You can see that the tas (automation file) is the second parm
Hope this helps