Complex sentence: For this reason, what remains of the sacrament after the Communion procession is reserved in the Tabernacle, where it can be utilized for later Masses, for private devotion and prayer, as well as for public Eucharistic adoration.
Split into simpler sentences: For this reason, what remains of the sacrament after the Communion procession is reserved in the Tabernacle. Secondarily, the reserved sacrament serves as a focal point for for private devotion and prayer as well as for public Eucharistic adoration.