Navigate to the folder containing your Native Instruments plug-ins and press OK.The FL Studio Plugin Manager appears. Click on the folder symbol (+) to add a Plugin search path.In the menu bar, click on Options and select Manage Plugins.Follow the steps below to add your NI VST folder to FL Studio: It is important to keep in mind that if you use the 64-bit version of FL Studio, you must add the folder where you have installed the 64-bit versions of your NI plug-ins and, respectively, if you use the 32-bit version of FL Studio, you must add the folder where you have installed the 32-bit versions of your NI plug-ins. No matter where you installed your VST plug-ins, you need to define the correct VST folder in FL Studio to make sure that this location is scanned by FL Studio at startup. Read this article to learn how to define the plug-in install locations for your product in Native Access. On a Windows computer, the VST versions of the software can be installed to any location on your hard drive. Note: Watch this video for more information about managing VST plug-ins on Windows computers.

You can find instructions for Mac in this article.

You will then be able to use your NI plug-ins within FL Studio. On Windows, Native Instruments software can be inserted via the VST plug-in interface. This article explains how to let FL Studio scan the folder where your NI VST plug-ins are installed.

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