IPR and attachments will be communicated via the patient's prescription, which will be returned in the box you receive your aligners. The amounts required will be shown in the design area, and any further instructions can be found in the Aligner Notes.
If the patient is receiving attachments, then an attachment template tray will also be in your vivid aligner box. The attachment template will be labeled accordingly.
If IPR is required at different stages throughout treatment as opposed to right at the beginning, you will see that highlighted in the comment section on the sheet that is returned in the box with your aligners.