If you wish to save a
current query, click on the 
button. A window will open as shown below where you may specify
the title and
description of you query.
After you entered title and description of the query, click OK to specify the query group. A window will open as shown below.
Choose a group from the tree or create a new one and click OK. The new query will be included in the selected group.
Finally, you may edit the titles and
descriptions of
the groups and queries. Click the
button to store the changes. To
delete items
from the tree select the item and click on the
button. Click OK to save the new query and close the
window.
If you wish to load a query
which has been stored
previously, click on the 
button. A
window will open as shown below.
Choose a query from the tree and click OK to close the form and filter the data sets according to the selected query.