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We develop a new Multi-Tracer Halo Occupation Distribution (\texttt{MTHOD})framework for the galaxy distribution and apply it to the extended BaryonOscillation Spectroscopic Survey (eBOSS) final data between $z=0.7-1.1$. Weobtain a best fit \mthod\, for each tracer and describe the host haloproperties of these galaxies. The mean halo masses for LRGs, ELGs and QSOs arefound to be $1.9 \times 10^{13} \msolaroh$, $1.1 \times 10^{12} \msolaroh$ and$5 \times 10^{12} \msolaroh$ respectively in the eBOSS data. We use the\texttt{MTHOD} framework to create mock galaxy catalogues and predict auto- andcross-correlation functions for all the tracers. Comparing these results withdata, we investigate galactic conformity, the phenomenon whereby the propertiesof neighbouring galaxies are mutually correlated in a manner that is notcaptured by the basic halo model. We detect \textsl{1-halo} conformity at morethan 3$\sigma$ statistical significance, while obtaining upper limit on\textsl{2-halo} conformity. We also look at the environmental dependence of thegalaxy quenching efficiency and find that halo mass driven quenchingsuccessfully explains the behaviour in high density regions, but it fails todescribe the quenching efficiency in low density regions. In particular, weshow that the quenching efficiency in low density filaments is higher in theobserved data, as compared to the prediction of the \mthod\ with halo massdriven quenching. The mock galaxy catalogue constructed in this paper ispublicly available on https://www.roe.ac.uk/~salam/MTHOD/ .

Multi-tracer extension of the halo model: probing quenching and conformity in eBOSS