LSM6D5S IMU FIFO threshold and decimation setting.

Hi guys

I'm configuring LSM6DS3 IMU in FIFO mode for my quad copter. I'm not sure what I should set for the FIFO threshold register (FIFO_CTRL1) and the decimation factor (FIFO_CTRL3), and also how these two registers will impact my reading.

Any guidance will be appreciated.

Thank you ~