Glad you asked. You can always get a quick reference to the time tracking features by typing help and selecting the appropriate topic.
To track your in and out timings, simply type "in" and "out" as a direct message (DM) to AttendanceBot.
You can look at your summary for the current day by saying "timesheet" and to get a detailed CSV report say "timesheet report".
You can look at more FAQs in this section to learn more time tracking features.