This is a screenshot show the database properties where you can disable transaction logging.
Schedule_DisableTXNLogging=1 will disable transaction logging on the freetime database (busytime.nsf or clubusy.nsf), check Technote 1213708 "Scheduler Task using a lot of CPU"
MailBoxDisableTXNLogging=1 will disable transaction logging for the servers mailboxes, check Technote 1090763 "Can the Transactional Logging setting on MAILBOX.NTF be disabled"
LOG_DisableTXNLogging=1 will disable transaction logging on the servers log.nsf beginning with 7.0.2, check Technote 1238392 "Disabling transaction logging by default on log.nsf "
Other best practices recommendations: