Press Ctrl+F to "Find". On the Players, Database, and Stats tab this will show/reveal the search field and focus it. There is an X button on the right to close it. On player windows (Add Players to Tournament, Buy-in Players, etc) Ctrl+F will toggle the Find feature (shows and hides it).
The
Name Format button is on the Preferences tab:
Strict Searching is also on the Preferences tab, in the
Behavior category:
With
Strict Searching enabled, each word you type in the
Find field must be present somewhere in the player's information to be "found". With
Strict Searching DISabled, if any of the words you type match the player information they will be "found". You probably want this off unless you're getting too many hits when you search.
Finally, also on the Preferences tab, in the
Player Detail Fields category, make sure you have the appropriate fields checked for searching: