Yes, the lsf.sudoers file allows the defined non-root users to run LSF commands. The documentation I linked provides an example of the contents and details about the various options you can set there. LSF_STARTUP_USERS and LSF_STARTUP_PATH are I think all you'd need to allow a non-root user to start LSF. Running multiple instances of LSF should be fine if you've changed all the ports in lsf.conf and ego.conf.
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