"Underlying" area in the search parameters of the options search

To search for options of specific underlying:

1. Select the "Underlying" checkbox.

2. In the "Underlying" area, click the "Selection" button.

3. The "Selection" dialogue window opens.

4. Enter the name, WKN or ISIN of the relevant underlying in the input field and start the search by pressing <RETURN> using the "Search" magnifying glass icon.
   
   You can restrict the search to specific security types by using the drop-down list to the right. By default, the search includes all security types ("All"). The number of securities found for a type is shown in brackets.

5. Select the the corresponding underlying in the list and confirm with "OK".

6. This adds the underlying as a search parameter.

7. You can refine your option search in the other areas.