If you do not see the plug-in for Sybase IQ in the main Sybase Central window, you can connect to it manually.
Select Tools > Plug-ins.
If Sybase IQ is listed, select it and choose Load (Alt+L).
If Sybase IQ is not listed, choose Register (Alt+R). Specify the plug-in jar file option. Then use the Browse button (Alt+r) to find and select the file $ASDIR/java/IQPlugin12.jar on UNIX or %ASDIR%\java\IQPlugin12.jar on Windows.
Check Automatically load on startup.
Click OK.