You can use the advanced dialog to enter the browser path for your browser. This lets you use a specific version of the browser (not available for Internet Explorer).
You can also specify whether you want to be able to use the multi-window support in your tests for this AUT . If your AUT has functions that open new windows, then deactivate the Single Window Mode checkbox. Any AUT's that are running in multi-window mode show the Selenium console as well as the AUT when the AUT is started. The Object Mapping Editor for multi-window AUT's has a button to allow switching between multiple open windows for mapping components, and there are actions in the HTML unbound modules to allow you to switch between windows during the test.
For information on the expert properties for the HTML AUT configuration, see the next section 3.7.3.3.