How do I add new contacts and adjust existing clients? September 18, 2019 12:05 Updated Follow Go to Clients Click on the debtor you want to update In the menu on the left, click on 'Edit data' In this screen you can: adjust general debtor information edit contact details of the debtor add new contacts Note: Only data fields without a lock can be adjusted The changes above may be overwritten when iController synchronizes with your accounting platform. If you want to update the debtor (contact) data, we advise you to implement changes directly on your accounting platform. Related articles Can I configure client exports? How can I group data of a debtor, belonging to different entities? What should I do if iController is not showing the correct invoice?