Milestone

Milestones are major checkpoints in a project. They can indicate the completion of key project tasks, the commencement of a phase or conclusion of the plan. For example, in a software development project, Research Complete can be a milestone that indicates that all the research activities have been completed and the project is now ready to move to the next step of preparing a Requirements Specification document.

In Celoxis, milestones are tasks that have zero duration and represented by a diamond symbol (◆) in the gantt chart.

Creating milestones

From the Interactive Gantt, click Gantt Toolbar ▸ Add ▸ Milestone.

To convert an existing task into a milestone, set its duration as zero.

Recommendations

Set predecessors to your milestones. Doing this will illustrate the impact to your milestones.
Set deadline (FNLT) constraints on milestones only if necessary as it will make it difficult to flexibly re-plan activities around your milestone.
Indent milestones so that they appear under the correct WBS element

Critical path

Constraint