How Can We Use Multiple Index Columns in Schedule Entries (cmn_schedule_span) / Business Calendar Entry (business_calendar_span)?SummaryNoticed that Schedule Entries (cmn_schedule_span) has multiple index columns (Type : Integer)like index0, index1, index2,... and index9.These are coming from its parent table Business Calendar Entry (business_calendar_span).However, there is no information about these index columns.Q1 : What purpose of multiple index columns in cmn_schedule_span ?Q2 : Would you please provide any sample to use multiple index columns in cmn_schedule_span ?Q3 : Is there any concern to use multiple index columns in cmn_schedule_span ? If no, is is possible to use it as a custom column customer wants ?ReleaseAllInstructionsA1 : The "index" columns on the business_calendar_span table are internally used by the platform to execute complicated aggregate queries.A2 : The columns are meant for internal use and are used along with "calendar_indices" table. OOB business calendars such as Year, Month, Quarter use these columns to facilitate faster GlideAggregate queries.A3 : Please do not modify the existing columns as there could be a risk of breaking other features that rely on Business Calendars.