AutoFill Settings are available for safe entries that have a username, password and homepage set, and the safe is configured for AutoFill in Settings/Passwords (available for safes upgraded to V2).
An entry can be hidden from AutoFill, or the rank of the entry increased. (The highest ranked matching entry is suggested in the Quicktype bar).
Additional hostnames may also be specified. Matching hosts will use the current entry username and password. This feature is intended for a group of websites that use the same login credential (and where seperate login credentials are not possible).