from Brendan in an email to Will T. : "We probably just want to add predicted retention time as a static property value to all molecules, peptides and small molecules alike, since it has recently been requested for peptides. For small molecules, we can just add RT as a field to the small molecule editing form, as well as adding RT to the Insert form, as you suggest. For peptides, we will have to think about how a user would edit an RT prediction property after adding the peptide to the document. Seems to imply a new Edit Peptide form."

This has been implemented