For ultra fast contact lookups, enable Fast Contact Lookup in INI Settings.
Open SalesPartner > More > Settings > INI Settings > Contact Entry tab
Check Use Fast Contact Lookup
The setting is applied immediately - a restart is not required.
The Fast Contact Lookup interface uses Locate style searching instead of Contains.
Locate: With Locate, search results are located rather than listed. Think of it like Lotto Strike, the search results will match the text in order. This means you cannot search 'outlook' to find email addresses that contain 'outlook' (Contains search). Instead of reducing the list of results, a Locate search shows you the location of your result in the list.
In Contact Entry, click Lookup Contact (Ctrl+F).
Enter your search text into the Find field
You can switch your search field using the drop down menu.