When the prince makes a freewill offering to the LORD, whether a burnt offering or a peace offering, the gate facing east must be opened for him. He is to offer his burnt offering or peace offering just as he does on the Sabbath day. Then he shall go out, and the gate must be closed after he goes out.
KJV
Now when the prince shall prepare a voluntary burnt offering or peace offerings voluntarily unto the LORD, [one] shall then open him the gate that looketh toward the east, and he shall prepare his burnt offering and his peace offerings, as he did on the sabbath day: then he shall go forth; and after his going forth [one] shall shut the gate.
ASV
And when the prince shall prepare a freewill-offering, a burnt-offering or peace-offerings as a freewill-offering unto Jehovah, one shall open for him the gate that looketh toward the east; and he shall prepare his burnt-offering and his peace-offerings, as he doth on the sabbath day: then he shall go forth; and after his going forth one shall shut the gate.