Select a document and launch the NoteMan EDIT icon
The "Modify Items" layer should be expanded. If it's not, click on it to expand.
Select an item (field) name on the left.
On the right, change the data type (using the Type drop down box), the values, the item name, and/or item properties.
Click the green "Item Changes" checkbutton to commit the changes, or the red checkbutton to undo.
When done making changes to the document, click the green "Note Changes" checkbutton in the Note layer, or the red checkbutton to undo all Note changes.