Thank you @dorilama
For some reason my code isn’t working:
"Go to the <u onclick='wwLib.executeWorkflow(`d43e2cda-2e70-4340-bf20-591717b09b9d`,{`department_slug`:`hr`,`loader_message`:`Human ressources`})'>Human ressources</u> department"
Logs say that department_slug parameter is missing.
Also, this code seems to make my editor crash 
EDIT: now the editor doesn’t crash and there’s no log; the workflow just won’t get triggered. Code remains the same.