If you have already had an UGM OJS account, you should register your existing account with this journal. Follow these steps.

Step 1 - Visit or click THIS LINK.
Step 2 - Fill in the login information (username and password) with your existing UGM OJS account (other UGM's journals).
Step 3 - You will be directed to your account (profile) dashboard. Select menu "Roles" at the top bar.
Step 4 - The selectable roles options appear. Checklist one or more the roles in this JANUS journal, then click save at the bottom of the page. You are now enrolled as the JANUS user with the roles you have selected.