Hi,
If you want to call the CMSIS-DSP function based on CM33 based on LPC5569, you can not import an SDK example, but you can follow up the procedure, the condition is that you have dragged the LPC55S69 SDK package to the Installed SDKs:
1)Create a new project by clicking New->Create a new C/C++ Project

2)select the processor like LPC55S69
3)In the following menu,click CMSIS Driver, and check the CMSIS_DSP_Library and CMSIS_DSP_Library_Source
You have to click the Driver which can select your peripherals driver you will use. You can

3)as the following screenshot, after completion, you can see the CMSIS-DSP source code and library

Hope it can help you
BR
Xiangjun Rong