There are multiple ways you can Launch and Close an IE application.
1. IE Connector: You can perform a various operation in Internet Explorer using the IE connector
like Launch and terminate a window Etc.
Click Here ( Internet Explorer Connector ) to access our Online Product Documentation and learn more about the IE connector.
2. You also handle Internet Explorer window by using start app component and send key shortcuts to start and close a tab or window.
Click Here ( Start App ) to review Product documentation for the Start app component.
Click Here ( Send Keys ) to Review Product documentation for the Send Keys component.
Please feel free to revert for any further clarifications.