If you have only one package, you will land on the Administration page. If you have more than one package, select the package in question to reach its Administration page.
Click the Webfiles link from the Hosting panel.
Click the Launch button to launch WebFiles.
Select one or more files/folders within Webfiles that you would like to zip up. To select more than one file, use hold the Ctrl button (or Command button for a Mac) on your keyboard while clicking with your mouse.
Select Zip... from the Edit menu.
Select Edit > Zip...
In the pop-up window, enter a name for the zip file and select the folder where the zip file should be saved. When finished, click the OK button.
Enter a name and location, then click OK
After the files/folders have been zipped, you will find the zip file saved in the folder you chose earlier.
The file is saved
For additional information, you may want to reference: