OKR Periods are setup to quarters by default in Ally and they are managed automatically by Ally. For example, when a quarter ends and new quarter begins, Ally will automatically set the current period for everyone in your organization to the new quarter. In addition to this, the Ally administrator(s) of an organization can manage the OKR Periods. Instead of the default quarterly periods, administrators can make it monthly or any custom time period they want for their organization by adding those OKR periods, and removing the default quarterly periods.
While creating an OKR, you can set the Time Period according to the quarter or time period the corresponding Objective belongs to. You can also change this by altering the start and end dates of the period.
Example: If you want to create an annual objective but make it due on October, you can set the end date accordingly.