Urkund is enabled by default within Moodle assignments, so unless you wish to disable the feature or otherwise modify the settings, staff may not need to do much more than create a new Moodle assignment.
Nevertheless, should it be helpful, settings can be modified as required (clicking on the question mark associated with each setting will provide further information about each option). The default Urkund settings as they appear in Moodle Assignment settings are shown below:
Please note that:
Urkund must be enabled before a student submits their assignment in order for an originality score / report to be generated. Enabling the setting retrospectively will not affect files already submitted.