On ‘HOME’ page -- > select 'Manage Import / Export' under 'Server Administration'
A box comes up... choose which server holds the data you want to back up.
On the 'Export to Disk' tab, then select which databases you want to export.
If you want all the tables, select option ‘Export to self-contained file’, otherwise choose the other option for a selective restore
If you need advanced options, see other post, otherwise then click ‘Start Export’