Monday, 8 April 2013

Resource Scheduling


In Realisor rather than saying we are going to be doing a project for three quarters and this will give us a certain level of quality, we instead say we want that quality at a certain point in time, and Realisor works out the schedule required to deliver that quality at that time. This allows us to change the delivery time dynamically to get the best mix of cost and benefit without having to manually re-plan all of the activities.

To the left of the qualities we have capabilities, and these capabilities each have a plan entering them for what needs to be done to create the capability, sustain it and eventually dispose it if we choose to get rid of it.

Resource scheduling on a plan is affected by when the Quality that the resources are attached to is selected in the 'Option Summary' grid.


In the image above, the three processes will be active whenever Initiative I-1 is at Quality level Q-2. This chain is also representative of time - the order of the processes going in to Capability CAP-1 shows the order in which they must be started. So for Prc-1 to be initiated, Prc-2 and Prc-3 must already exist.

Setting I-1 to Optimal (Q-2) for Phase 1 means that prior to the start of Phase 2 the three processes must have finished being started.

The timing of Delivery resources is worked out backwards from the first phase the Quality is selected, e.g. immediately before phase 2. First 'Delivery process 2' is scheduled backwards from the start date of Phase 2 and 'Delivery Process 1' is then scheduled backwards from the start date of 'Delivery Process 2'.

Disposal Resources are always scheduled for use immediately after the Phase selected in the 'Option Summary' grid ends, in this instance after Phase 2.
For the timing of Sustain resources there are three situations that affect their scheduling.- If between the Sustain resources and the Capability there are no other resources, the Sustain resources are used only in the Phase selected in the 'Option Schedule' grid.

If there are Delivery resources after the Sustain resources, Realisor assumes you want to Sustain the resources at the same time the Delivery resource starts. Sustainment ends as per the previous examples

If there are Delivery Resources BEFORE the Sustain resources then this does not affect the Sustain Resources. If there are Disposal Resources AFTER the Sustain resources then this does not affect the Sustain resources.

A Process can be performed multiple times - here Process 9 is linked to two Capabilities that are both attached to the same Quality - Q6.
If a Process is linked to two Capabilities on the same Quality, it is assumed it will be carried out twice, and therefore incur two lots of Resource and cost.


When Processes are linked to multiple Capabilities on different Qualities, shown here as Process 9: 
These Qualities may be on different or the same Initiatives. In this case the Process will only be performed twice if both Qualities are selected on the ‘Option Summary’ grid.


Multiple links to the same chain and Capability:

If a Process is linked in multiple times to the same ‘chain’ i.e. Processes that all feed to the same Capability, then it is only counted once.

Multiple links to different chains and Capabilities:

If a Process is linked to multiple ‘chains’ i.e. Processes feed to different Capabilities, then it is counted once per different Capability.