Job Shop ERP Calendar

ERP systems provide a variety number of ways to model the available capacity of resources.  There are basically two ways to do this, either a simplistic approach or a more comprehensive approach.

Simplistic Approach

The basic or simplistic approach is where there is one shop calendar which specifies the available days and hour per day with possible exceptions.   An example would be an organization works for 8 hour days monday through Friday.  This calendar can be be broken into smaller units of five, ten or 15 minutes to even an hour.  A global company wide calendar would accomplish this simplistic approach but the system is not very refined.  A refinement to this calendar can be that each scheduling resource may have its own calendar.   Each individual set of resources would then be able to specify variations to a standard calendar including days off, holidays and shut downs for repairs.

Comprehensive Approach

A more comprehensive approach is to use shift schedules.  A shift schedule defines start and end times of each shift and possible times between shifts throughout a 24 hour day.   Shifts a assigned independently of resource and then assigned to resources.   A global scheduling calendar is still required but each resource can be assigned a set of shifts.   As required through the use of exceptions, shifts can be assigned specific days in order to manage exceptions to the standard shift schedule.   A shift approach allows for other capacity scheduling requirements such as shift efficiencies and available head count.

Resource Types

There are various resource types which can associated to a calendar including employee’s, machines and even groups of machines.

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