1. First, set your default quantization settings in Preferences, under the Play category.
  2. Choose a quantization unit that matches the duration of the shortest notes you are intending to record. If you will be playing a passage with several tuplets then switch on Detect tuplets, otherwise leave that option unchecked.
  3. Try using Fill gaps which can return better results when using a natural playing style, as Dorico will fill in the gaps sometimes left between notes.
  4. If there are portions of the recording that would benefit from different quantization options, simply select those notes and choose Edit > Requantize and choose the relevant settings.
  5. You can apply Requantize at any time, as many times as you need.