If I understood you correctly, then you are probably looking for the settings options in the so-called “Tool Options Docker”. You have to check “Tool Options” under “Settings” >>> “Options” and then you can make the appropriate settings in the corresponding Docker “Tool Options”.
I may be wrong though I haven’t really used this tool yet, but then you can ask here again, I’m sure there is someone who knows it more exactly than I do.
You should also take a look in the manual section for the Calligraphy Tool
Edit: Manual link added
Edit 2: Typo