For simplicity and ease of use, only the latest versions are offered the in NoMachine drop-down menus and via the wrapper scripts. But there are ways that you can still run older versions.
Although we may not make wrapper scripts (and hence drop-down menus on which these are based) for all software titles, the older versions of the software are still installed on the cluster.
In order to run jobs with these older versions, you will need to know the path to the program and use that in a custom LSF job submission that you must write. Please see our Using Software page on application locations; and our Custom Submission Scripts section on writing your own LSF job submission commands.