Some context might be helpful,
anyhow if this deals with loading files or whatever "Ladesitzung" should be what you are looking for.

to schedule means to plan something

Key type could be a type of key (Schlüsseltyp or Tastentyp) or a classification, in which case Schlüsselkategorie or Schlüsseltyp would be better.

If you can provide more context, contact me at [email protected] or see http://www.amanuensis.de/