How correlate the chelation and complexometric titration?

Chelation involves the formation of complex compounds between a metal ion and a chelating agent containing multiple donor atoms. In complexometric titration, a chelating agent is used to form a colored complex with the metal ion being titrated. The endpoint of the titration is detected by a color change due to the formation of the metal-chelate complex, which helps in determining the concentration of the metal ion in the sample.