You can assign keyboard shortcuts to Plug-Ins to have them inserted in the first available insert slot in the Inspector instantly.
Open the Plug-Ins window from the drop down menu of PlugSearch in the Finder task bar. Select a Plug-In and press the 'Learn' button, and press a keyboard shortcut. The shortcut is now assigned to the Plug-In. If the shortcut was assigned to another Plug-In, it will be removed from that Plug-In.
Note: these shortcuts override any Logic Pro keyboard shortcuts, so make sure they don't overlap any Logic Pro shortcut you are using.
The shortcuts are stored in the preferences of PlugSearch. If you would like to transfer these to another system, copy this file:
~/Library/Preferences/com.speakerfood.PlugSearch