Go into restore, select the day\tape you want to restore from expand the tree until you find the file(s) you want and then select them.
Hit run now, insert the correct tape if you haven't already and by magic the files will be back......
You may want to redirect the files for more control over the restore? By adding a prefix of RESTORED to the file (manually) then putting them back in the correct place for the user.
Iain