Net radical on top — the top-stacked form of
网. Originally
置 meant 'to set free a captive, lay aside' — to put aside the net, releasing what was caught. From 'set aside' developed the modern senses 'place, set up, arrange'. Same radical anchors
罗 net,
罚 punish,
罪 crime,
署 office — the legal-trapping family.