Say you need to create a table similar to the existing one. You can copy any created table and adjust it according to your needs.
Setup link in the top right corner of the window.
From the setup menu select
Tables > Customize existing tables. The system will display a list of tables that already exist :
Click on the
Copy button next to the necessary table to create a new table with the same fields
If you need to copy data, select the
Copy Data option.
Please note that all relations created in the original table will be created in the copy of this table automatically.