Relationships lines may not be formatted like in SureTrak, but unlike Microsoft Project they do not adopt the color of the predecessor activity which is often misleading.
- The relationships may be displayed or hidden by clicking on the icon on the Activity toolbar or by checking and un-checking the Show Relationships box in the Bar Chart Options form, General tab.
- The color of the relationship represents:
Ø Red – Critical and therefore a Driving relationship,
Ø Solid Black – Non-Critical Driving relationship and therefore has Free Float,
Ø Dotted Black – Non-Critical Non-Driving relationship and has Free Float, and
Ø Blue – a selected relationship and may be deleted.
- A relationship is displayed on the Baseline bar, as discussed in paragraph 8.3, when the Baseline bar is above the Actual and Remaining bars in the Bars form. To place the relationships onto the Early bar, which is more logical, you should move the Baseline bars in the Bars form to below the Actual and Remaining bars in the Bars form.
|Relationships on the Baseline Bar
||Relationships on the Current Bar
Adding and Removing Relationships
Graphically Adding and Deleting a Relationship
To add relationships move the mouse pointer to end of the predecessor activity bar, which will change the mouse arrow to a . Then simply hold down the left mouse key, drag to the start of the successor activity and release the mouse button.
To create other relationships such as Start to Start, drag from the beginning of the predecessor to the beginning of the successor bar.
To confirm or edit the link or add lag after a link has been added, the Edit Relationship form may be opened:
- Select a relationship line by clicking and it will turn to blue and an arrow will appear, then
- Double-click to open the Edit Relationship form:
- Click on the delete button to delete a relationship.
Activity Types and Milestones in Primavera P6 Version 8.2
|An Activity may be assigned one of the following default Activity Types using the drop down box in the Project Defaults tab:
- Finish Milestone
- Level of Effort
- Resource Dependent
- Start Milestone
- Task Dependent
- WBS Summary
||These Activity Types have a duration and will only calculate the duration using the assigned calendar even when one or more resources are assigned to an activity.
||These Activity Types have a duration and will calculate the duration only using the calendar assigned to the activity when NO resources are assigned to the activity.
These activities acknowledge Resource Calendars when resources are assigned.
This is similar to an Independent Activity Type in P3 and SureTrak.
They acknowledge the Activity calendar to calculate the Early Start date.
||This Activity type is similar to P3 and SureTrak Hammock activities. It spans from the start or finish of one or more predecessor activities to the start or finish of one or more successor activities which are linked by relationships.
||A Start Milestone has a start date and no finish date and is scheduled at the start of a time period and may not be assigned Resources.
||A Finish Milestone has a finish date, no start date and is scheduled at the end of a time period and may not be assigned Resources.
Changing a milestone from Start to Finish would not affect a schedule when all the tasks are on one calendar but would move the milestone from the start of a day to the finish of the previous day.
||This Activity type calculates in the same way as P3 and SureTrak WBS activities and they span all activities with the same WBS code, but without relationships that are used with LOEs.
||A Milestone has zero duration and is used to mark the start or finish of a major event. Primavera differentiates between Start and Finish Milestones in the same way as P3 and SureTrak, where a Start Milestone has a start date and no finish date and a Finish Milestone has a finish date and no start date. This is unlike Microsoft Project, which only has one type of Milestone. Later versions of Microsoft Project allow milestones with durations.
Eastwood Harris Supplies Project Management Training Manuals, Project Management Training Presentations and Consulting on Primavera P6 and Microsoft Project 2010 across Australia.
“How to Assign Task Calendars
A task may be assigned a calendar that is different from the Project Calendar by:
- Displaying the Task Calendar column and editing the Task Calendar from this column, or
- Double-clicking on the task to open the Task Information form and selecting the Advanced tab.
After a calendar has been assigned, an icon will appear in the Indicators column and the calendar name displayed in the Task Calendar column, as shown in the picture below for the Installation Requirements task:
- The task Finish date, Total Float, Free Float and Variances from a Baseline will be calculated on the Task Calendar. This often leads to confusion for new users as tasks on a 24-hour/day calendar will have different Float than tasks on an 8-hour/day calendar.
- When resources are assigned to a Task the Finish date is calculated on the Resource calendar; unless the Task has been assigned a calendar and the box in the Task Information form Advanced tab Scheduling ignores resource calendars is checked, then the task duration is calculated based on the assigned Task Calendar.”
Excerpt from 99 Tips and Traps for Microsoft Office Project