![]() This post addresses one of the biggest misconceptions for managers, planners and schedulers who use the MS Project software tool: Slack available as a checkbox in MS Project is for the Total Slack. In the above figure, the negative total slack values are shown in red color coding, whereas the positive total slack is shown in green color coding. To enable the checkbox, go to:įormat tab – Bar Styles – Slack checkbox. When you enable the checkbox, the free slack/float value is shown. Now, in MS Project 2019 software, there is an option to enable the free slack (NOT total slack), with a flip of a checkbox. Recorded Global Webinar: Two Pass Technique with MS Project To understand early start, and related schedule fields, along with the Total Slack or Total Float values, you can use this webinar. This is very important for management practitioners because, this slack will push your project’s finish date. On the other hand, total slack (or total float) is the amount of time you can delay a task, without impacting the project’s end date or violating a schedule constraint. Consumption of free slack has no impact at all on the project’s finish date and if you have a number of tasks-say thousands-free slack is not going to be your top priority. Slack is also known as Float in project management.įree slack (or free float) is the amount of time you can delay a task, without impacting the early start (ES) of the successor(s). This post will outline how to enable the Total Slack, Free Slack and Negative Total Slack in MS Project. A number of books, guides inform the default slack available in MS Project to be Total Slack, which is incorrect. Free Slack and Total Slack are completely two different concepts in management. Takeaway: Many confuse Free Slack, which can be enabled with a checkbox in MS Project, with that of Total Slack.
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