There are several ways to switch between multiple SecureCRT sessions .
If you enable the Show session tabs option on the Global Options/Terminal/Appearance dialog, you can switch between sessions by clicking on the tabs in the SecureCRT window.
You can also use the CTRL+TAB keyboard shortcut to take you through multiple SecureCRT session windows, while CTRL+SHIFT+TAB will take you backwards through the sessions.
Using ALT+1 through ALT+0 will allow you to directly navigate to any of the first ten tabs.