Possible meanings are 1) that "the tent of meeting" and "the tabernacle" are two names for the same thing or 2) the tabernacle is part of the tent of meeting, "the sanctuary of the tent of meeting"
This can be stated in active form. AT: "according to the instructions that David gave them" or "according to the instructions they received" (See: [[rc://en/ta/man/translate/figs-activepassive]])