Stage numbers help you and the patient keep track of which model and aligner tray is which. Automatically placed on the molars (or the next tooth is available) of each arch is the current stage number. During treatment planning in the software, this number displays as 00. Once exported, the software generates the individual stage number. This raised number gets embossed on the aligner when vacuum formed.
The stage number repositions like an attachment. Clicking on the 00 brings up a dot and semi-circle. Clicking and dragging the dot allows you to move the number on the tooth or a different tooth. The semi-circle rotates the number. Clicking on anything else saves the position of the stage number.