The JWST/NIRSpec GTO programme 'Galaxy Assembly with NIRSpec IFS’ (GA-NIFS) is an ambitious project aimed at characterising the internal structure and close environment of >50 distant galaxies and active galactic nuclei (AGN) at z=2-11. In this seminar, I will present an overview of the first results obtained for a GA-NIFS subsample of AGN at 3 < z < 7. In particular, I will discuss our investigation into the environments of these bright sources highlighting the occurrence of galaxy-AGN and dual AGN systems within the relatively small NIRSpec field-of-view (3"x3"). Notably we discovered a triple AGN and four dual AGN. These findings suggest that multiple AGN may be more common than previously thought based on earlier observational campaigns. Moreover our inferred fraction of dual AGN moderately exceeds predictions from cosmological simulations that mimic our observational criteria. I will also present an overview of the analysis required to optimise the AGN-host decomposition taking into account the NIRSpec IFS PSF under-sampling effects (wiggles).