As admin, enable "Mobile services": Plugins ► Web Services ► Mobile Create a new course (with no users) Add one instance of the guest-enrolment method (enabled without password) Create a Token for one authenticated user: Click on Site administration ► Plugins ► Web services ► Manage tokens Next, you can do a CURL REST call simulating a WS client with the student user. You need to replace the wstoken, and the URL of your moodle instance. Replace also the courseid with the not visible course id. curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data ‘courseid=106&wsfunction=core_enrol_get_course_enrolment_methods&wstoken=ffbe3a3002f235bf9d01fd9369e10b66' | python -m "json.tool" Confirm that you see listed the guest-enrolment method. Now, execute the following CURL request replacing the instanceid with the guest-enrolment plugin instance id for the course in the database. curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data ‘instanceid=106&wsfunction=enrol_guest_get_instance_info&wstoken=ffbe3a3002f235bf9d01fd9369e10b66' | python -m "json.tool" Confirm that in the CURL response you see the correct values for id, courseid, type, name, status and passwordrequired Now, edit the guest-enrolment settings add a password and change the status value Execute the CURL command again and confirm that you see the correct values for passwordrequired and status