Sub Process Timing

Using this feature you can control an Activity’s operation time using a sub process, allowing the use of complex routing, resources and timing to contribute towards the Activity operation time.

Select the Activity and chose Timing from the ribbon.

Timing Orientation

In the dialog shown below, select ‘From Sub Process starting’ and chose the Start Point of your chosen sub process from the dropdown list. The operation time for the Activity will now be based on how long the work item takes to progress to the end of the sub process.

Sub Process Timing selected

An example of Sub Process Timing

The simulation below demonstrates a surgical process in a hospital. Patients are admitted and they require a bed before they can have surgery. Once they have a bed the time they spend in the bed is dependent on when they get their vitals checked, the length of their consultation, the length of their surgery and the length of their recovery time.

Sub Process example simulation

In order to simulate this, a sub process has been created which demonstrates the process once a patient has a bed. This process is shown in the sub window Surgical Bed Process.

Sub Process example simulation

The Activity ‘Length of Stay’ timing orientation has then been set to ‘From Sub Process’, using the instructions previously highlighted. The time a patient spends in a bed will now be based on the length of time it takes the work item to progress from the start of the Surgical Bed Process until they recover.

NOTE: The time will include all wait and travel times defined in the sub process.