Open the worksheet and click 'Save As'
Use the links within 'Location' to select a different directory
To save in your school's shared area, click the name of your school and choose the 'Shared' folder of the 'Restricted' folder. Note that the shared folder can be seen by students at your school but the restricted folder cannot.
To save the worksheet in a folder within your own directory, click on 'Your Name' and choose a folder to save the worksheet in. To make folders within your worksheet directory, go to Papers & Worksheets. Click '+ New' towards the top right of the web page and select 'Directory'. Give the directory a name and select your preferred permissions on the folder.
You can also move your worksheets to new directories using the tick box next to the worksheets in your directory.
You can then select the directory you'd like to save the worksheet in.