Step 1: Within the Moodle Course Page, click the down-pointing arrow next to your profile picture, and then select "Preferences".
Step 2: Select "Change Password" from within "User Account".
Step 3: To change your password, insert your current password within the "Current Password" textbox provided. Then insert a new password within the "New Password" textbox, and then insert the same "New Password" within the "New Password (again)" textbox provided. Click "Save Changes".