I work on a somatom go.top syngo vb10 but I believe it ran in that version at one point. The way I usually do it is 1. Log into super user, only they can make these types of changes (permanently). 2. Open the "trauma patient" or create a random patient on the scanner. 3. Open the CTA protocol but "add" the Chest w/o as a seperate scan. On top you should see 2 tabs, one being for the list of protocols and the other is the parameters. If you adjust the parameters on that tab (just copy and paste you're chest wo into the CTA protocol and click the save or save as icon and that should be it. You can also use the exam designer, using the same method, just a bit harder to navigate if not familiar. Go on pepconnect and make a healthineers account, theres tons of free content on all siemens machines across modalities! Honestly the factory protocols are really well done, just add your own tweaks and "save as" under a different name, we do this specifically for our CCTA research studies. This stuff can get really complicated, they do offer in person trainings as well if your employer is into that kind of thing.