Zephyr Scientific Library Integration in application

[fatimatayyab71]

I am new to nRF connect sdk, zephyr RTOS and I am working on sensor fusion of MPU-9250, and there is a zscilib(zephyr scientific library) available in which all sensor fusion techniques are available but the thing is that i dont have any idea about how to add or include it in our application, it is available in this directory:

C:\ncs\v2.5.0-rc1\modules\lib

Also can you please guide about how to add external header files in the application and what configurations do we have to need in order to do that.