The phrase "elaborate system" refers to a complex and detailed arrangement or set of rules. It suggests that something has been carefully designed and involves many intricate parts. Full definition
So they created elaborate systems for gathering information on external and internal threats to their revolution. (businessinsider.com)
The more elaborate systems allow an owner to set up an electric «fence» to keep the dog within a certain boundary, although this has very limited training value. (caninejournal.com)
Instead of starting out feeling overwhelmed or getting in over my head by creating elaborate systems, I prefer to start with a plan so simple I know I can keep up with it. (lifestorage.com)