Hello gabrieleg615679,
You may use Test activity after the scheduler to run the workflow multiple times only on weekdays.
The Formula that you should use is : Lower(DateFormat(GetDate() ,'%A')) == 'sat' OR Lower(DateFormat(GetDate() ,'%A')) == 'sun'.
By using the above formula Test transaction will point to End Activity(for Saturday and Sunday) and default transaction will point to your workflow(for Monday to Friday)
Regards,
Rahul S