Can you give more details? which Granta Products?
For EduPack or Selector, you can use the 'Duplicate Record' option and then save up to 250 new records in a specific project (.ces) (see screenshot below).
You can use as well the 'Synthesizer' to create composite and architectured (or user defined) materials: https://forum.ansys.com/forums/topic/what-can-i-do-with-the-synthesizer-tool-in-granta-edupack/
If you need to create a new database, Granta MI is the product you need: https://www.ansys.com/products/materials/granta-mi