Positions of the group galaxies with respect to the MS of star formation at z = 1.85 (black solid line, Sargent et al. 2014). The ±0.3 dex scatter on the MS is shown, and the limits on SFR are at 3σ. The IHL peak is shown in red. SFRs have been taken from FAST++, with the exception of the 4 galaxies that have detected SFRs in the FIR catalogue (indicated with a star, see also Table 1). 68% errors are shown.