Select the "Projects" icon and click on the desired project.
Choose Sample to Copy
In the Projects page, click on the Samples tab and choose the samples that you want to copy. Once selected, click on the 'Copy to..' button at the top.
Copy to Project
In the pop up window, choose the project to which the sample is to be copied to, from the drop down list and cick 'Copy'.
A green notification at the top right indicates that the copy is succeessful.