To close a period, click on the open icon

and the period will close

. All unposted transactions in a period and inventory backlogs, for current and all previous periods, must be cleared before a period can be closed.
Once a month is closed it can no longer be posted to. It is good practice to close each month once all entries have been made. If a period needs to be reopened, click on closed icon 
to reopen.
If any changes to the fiscal periods are not being reflected. Please click the

button in the top right corner of the window to refresh the system.