Merlin provides very comprehensive support of entering actual values. Actuals for activities can be entered in the inspector under the "Actuals" tab or entered in the outline view using the relevant columns.
Assuming you have created the following project:
After the planning is finished, the project begins. Promptly the start of the first activities is delayed. You enter the actual start in the Inspector under the tab "Actual Values:"
The Gantt chart will look like this:
The gray bars represent the planned values and the colored bars now represent the expected values. This means that the project can end at the earliest (when no other delays occur) on the October 6th.
Note: If you need to create a report in which the planning values are not visible, you can deactivate the gray bars in the view options:
The Gantt chart looks like this:
The behavior in the Utilization View is pretty much the same.