Ezekiel"s guide informed him that the rooms to the north and south of the "separate area" were for the priests to use when they ate the sacrifices that people brought to the temple. Under the Mosaic Law, the priests obtained parts of the burnt, grain, peace, sin, and trespass (guilt) offerings ( Leviticus 6-7). In the future, priests will receive parts of the grain, sin, and trespass offerings at least. The priests would deposit the offerings in these rooms. They were also dressing rooms for the priests since they could not go from the "separate area" or the inner court into the outer court without changing their clothes. In view of this statement, there must be access into each of these two buildings from the "separate area" as well as from the outer court. [source][source][source]
"The burden of the present account is to show that the holiness of sacred space extends beyond the concentric design of the temple complex to the form of the auxiliary structures and the conduct of humans within those structures. Again the proportions of sacred space are more important than the appearance of the buildings." [1][source]