There is no global Submit button in IntegrityNext to send all of your completed questionnaires to your inviting company(ies).
Instead, your answers become automatically visible to your inviting company(ies) each time you click Submit (when completing a questionnaire for the first time) or Update (when editing previously submitted answers). These buttons are located at the end of each questionnaire.
If a questionnaire contains multiple chapters, the Submit or Update button will only appear after you have navigated through all chapters using the Next button. Once you reach the final chapter, you will find the Submit or Update button at the end of the questionnaire. Clicking this button saves your responses and immediately makes them visible to your inviting company(ies).