As per described on DuckDuckGo macOS Browser Integration | Bitwarden Help Center and The first external password manager built into DuckDuckGo for Mac | Bitwarden Blog, configuring Bitwarden in the Mac OS native DDG browser.
The instructions point to DuckDuckGo > Settings > Passwords & Autofill where supposedly we could setup the integration. However, in the section nothing can be found on bitwarden.
