By default, the "Picture" and "file" fields allow both the teacher's role and the student's role to upload. Unless someone changed the permission either on the database module, or in the course level, or in the site level. You'd better have a check.
"Preset' is for quick import a database design, similar to the backup/restore. After you have imported a "preset", it has no meaning anymore. You can edit (Create new fields) in anyway you want to.
"Preset' is for quick import a database design, similar to the backup/restore. After you have imported a "preset", it has no meaning anymore. You can edit (Create new fields) in anyway you want to.