# Connect onOffice Set up the onOffice integration once, centrally, under **Settings → Integrations → onOffice**. After that every tool that uses onOffice (for example Leads) shares the same connection automatically. No tool asks for its own credentials. ## Ready in three steps Create an API user in onOffice, grant the rights, generate a token and secret, then test the connection in the platform. Your address book and your properties are imported and then reconciled automatically every day. The field mapping ships with sensible defaults. Review, extend if needed, save. The status is detected automatically. ## Detailed guides API user, rights, token and secret, connection test and data-flow switches. The central address book every tool reads its contacts from. Import your properties in full and with the correct status. Map fields, add custom fields, translate values. How the object status is determined and how to attach your own value list. Fixes for the most common sync problems. ## Core principles Addresses and objects are synced centrally. Every tool reads the same state and you maintain the mapping only once. The entire inventory is imported. Filter by status in the gallery instead of missing objects. Unmapped fields are kept in full in the object or contact details. You can add a mapping later and re-sync at any time. Credentials are encrypted server-side and never shown again. Verifiable and revocable at any time.