The Workable Backlog is a useful metric shown on top of the Lean PlanDo.
The numbers shown in workable backlog are described below
This metric is updated real-time. Whenever a constraint gets added to a task in the Do Week, the 'Can do' number in the workable backlog decreases by one. Similarly when a task gets committed to the Do List, the 'Will do' number gets incremented.
Also, when a task gets completed as planned in the Do List, the 'Did' number gets incremented. The Did tasks are calculated based on number of tasks whose actual progress equals or is more than the allocated progress for the week.
It is also important to note that Should Do is counted by the base dates of the Tasks, not the expected dates. Therefore, even if the task is outside the Do Week (due to being delayed), it will still be counted as a Should Do if its base dates fall within the Do Week.
To check out the workable backlog performance under Insights, read 6.5 Workable backlogs.
Notes:
Can Do numbers are not affected to the tasks which cannot be committed due to dependencies from tasks from other activities (cross dependencies), but its has no dependency or constraint directly applied to it or its parent activity. See the below scenario for an example.
In this example, the task Not counted in 'Can Do' has a constraint. Therefore, it is not counted in "Can Do". It has a SS0 successor to the task Counted in Can Do. Thus, the task Counted in Can Do cannot be committed - however it is still counted as "Can Do" in the Workable Backlog. Only if it has a predecessor that has not started, or a constraint applied to it or its activity, it will not be counted in Can Do.