If you go back to Exodus 26 you will find the instructions God gave Moses to build the tabernacle. There are measurements and materials for curtains, boards, sockets, coverings and so forth. In this chapter Bezaleel and Aholiab are following those instructions. The reading looks very similar but in this case they are doing all the things God described before.

Exodus 36

“Then Bezaleel and Aholiab, and every wise hearted man in whom the Lord put wisdom and understanding to know how to work all manner of work for the service of the sanctuary, shall do according to all that the LORD has commanded.”