You can create a new index entry at the cursor position by dragging an existing page reference to the Create New Index Entry icon at the bottom of the Index palette. However, that icon is adjacent to the Trash icon, and both are small. It is too easy to drag the existing page reference onto the Trash icon instead, thus deleting (without a warning!) the existing entry instead of creating a new one. Moving the Trash icon to between the Update Preview or Generate Index icons would reduce this risk. Or add some space and/or a vertical line before the Trash icon so as to give a stronger visual differentiation between the two functions.