We have a couple full videos on using Nectar 3 for voiceover and narration sound.
Get That Pro Sound - Shure SM7B & Nectar 3 (Podcast - YouTube - Narration Voice)
https://youtu.be/aA9BX_1ye9w
Get That Joe Rogan Podcast Sound with the Shure SM7B & Nectar 3
https://youtu.be/G-_bmm_i_8k
Get That Pro Sound - Audio-Technica AT2020 (Podcast, YouTube, Voiceover)
https://youtu.be/g0MBLR4GkFM
Those will get you up to speed on Nectar 3 for a narration sound. Adjust to fit your voice and preference.