Depending on what you are trying to find, you have several search options:

1.  If you are looking for a specific machine, start typing it's name in the Search box. The list will change as you type.

2.  If you would like to filter for a machine's difficulty or release period, use the filter options. Click on the Filter symbol to view the filter options. Choose your options and click Search.

3.  If you wish to switch between machines while you are connected through Kali, click on the name of the machine you are currently working on to open the Search box and select the new machine you wish to start.

Note, while connected to the Kali Linux instance, you can only search machines for either PG Play or Practice. To change between Play and Practice machines, return to the Control Panel, switch to the desired subscription and start a machine.