en_tn/1ch/06/32.md

the tabernacle, the tent of meeting

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"

They fulfilled their duties

"They did their work" or "They did their various kinds of work"

according to the instructions given to them

This can be stated in active form. Alternate translation: "according to the instructions that David gave them" or "according to the instructions they received" (See: rc://en/ta/man/jit/figs-activepassive)