What are predecessors in Microsoft Project
Olivia Owen
Published Feb 20, 2026
In MS Project, a predecessor is defined as a task which drives its successor task before it can start or finish. When scheduling projects, an individual task may have multiple predecessors linked to it.
How do you use predecessors in a project?
On the Task tab, in the Properties group, choose Information. On the Predecessors tab, in the Task Name column, select the task that should not be linked, and then select a task from the list to identify the correct dependency. Modify the link type, lag time, or lead time in the Type and Lag columns.
What does SS and FF mean in MS Project?
Start-to-start (SS) Indicates that the start date of the predecessor task determines the start date of the successor task. … Finish-to-finish (FF) Indicates that the finish date of the predecessor task determines the finish date of the successor task.
What is predecessor and successor in MS Project?
By definition, the predecessor is the first task; it controls the start or end date for all related successor tasks. The successor, by contrast, is the task whose start or end date is controlled by the predecessor. A dependency is the relationship between predecessor and successor tasks.What is FF FS SF SS?
Finish-to-Start Relationship (FS) Finish-to-Finish Relationship (FF) Start-to-Start Relationship (SS) Start-to-Finish Relationship (SF)
How do I show predecessors columns in MS Project?
Drag the split bar to the right edge of the Finish column. Click the Format tab to display the Format ribbon. In the Bar Styles section of the Format ribbon, click the Task Path pick list button and select the Predecessors item on the pick list.
What predecessor means?
Definition of predecessor 1 : one that precedes especially : a person who has previously occupied a position or office to which another has succeeded. 2 archaic : ancestor. Synonyms & Antonyms Example Sentences Learn More About predecessor.
What does SS mean in Microsoft project?
SS = Scheduled Start of the activity. SF = Scheduled Finish of the activity.What are predecessors and successors?
Successor and predecessor are called as after numbers and before numbers respectively. Predecessor refers to the previous term of a particular term while the successor refers to the next term of a particular term.
What are predecessors in Workfront?Predecessors are tasks on which other tasks are dependent for completion. Predecessor relationships affect the Start and Completion Dates of the tasks and ultimately impact the timeline of the project.
Article first time published onWhat is SF in project management?
Those in project management must be certain to keep a logical flow to their projects. In this case, a successor task cannot start until the predecessor task has started, and this is implemented in a start-to-finish (SF) model. This is the most logical path to follow when planning a project.
What is float scheduling?
Learn that Total Float is the amount of time that a task or activity in a schedule can be delayed without causing a delay to subsequent activities and the project completion date.
What are the 3 types of dependencies?
- Causal (logical) It is impossible to edit a text before it is written. …
- Resource constraints. It is logically possible to paint four walls in a room simultaneously but there is only one painter.
- Discretionary (preferential)
What is finish finish relationship?
According to the PMBOK Guide, “Finish to Finish is a Logical Relationship in which a Successor Activity cannot finish until a Predecessor Activity has finished.” In simpler words, the end of the successor activity depends on when the predecessor is done.
What is predecessor example?
The definition of a predecessor is someone who came before another person. An example of a predecessor is the person who had your job before you were hired.
How do I find my predecessor?
The predecessor of a given number can be found by subtracting 1 to the given number. For example, the predecessor of 1 is 0, the successor of 2 is 1 , the successor of 3 is 2 etc. The only whole number i.e. 0 does not have any predecessor. We can observe every whole number except 0 has its predecessor.
What is the predecessor of 99?
The predecessor of 99 is 98. The predecessor of any integer is given by (n-1), where ‘n’ is an integer. Therefore, the predecessor of 99 = 99 – 1 = 98.
Can you delete columns in MS Project?
Highlight the column and hit the “Delete” key on your keyboard to completely remove it from the project. This action merely hides the column.
How do I add a predecessor to my project online?
In order to update predecessor, as soon as you have the “predecessor” column in the view (ie tasks summary), you can update it. If you don’t have it, go to server settings, manage views and select a project détails view to add the predecessor column.
What is the predecessor of 16?
PREDECESSOR OF -16 IS -17.
What is the predecessor of 17?
Predecessor and successor The number 16 comes before 17, we say that the predecessor of 17 is 17–1=16, the predecessor of 20 is 20 – 1 = 19, and so on.
What is the predecessor of 100000?
To find the predecessor of 100000, we need to subtract 1 from 100000. Therefore, the predecessor of 100000$ = 100000 – 1 = 99999$.
How do I assign a predecessor?
On the Activities page, select an activity to which you want to assign a predecessor and click the Predecessors detail window. Assign (Insert). In the Select Predecessor Activity dialog box, assign activities and click Close. Save (Ctrl+S).
What is an FS dependency?
A Finish-to-Start (FS) dependency is perhaps the most common dependency type that you will come across in projects. This is due to the fact that this ‘type’ means a successor (second task) cannot begin until its predecessor (first task) is complete, which is the most common scenario in projects.
What does FF mean in schedule?
Finish-to-finish, also known by the two letter abbreviation of FF, refers to the particular and specific long term and logical relationship exists between one particular schedule activity and another particular schedule activity.
What are the four types of dependencies?
There are 4 types of dependencies in project management viz. Mandatory, Discretionary, External, & Internal.
What is SF relationship?
According to the PMBOK Guide, a start-to-finish (SF) relationship is “A logical relationship in which a successor activity cannot finish until a predecessor activity has started. ” In simple words, the finish of a successor activity is dependent on the start of the predecessor activity.
Is slack and float same?
The terms “slack” and “float” are often used interchangeably. However, the main difference between float and slack is that slack is typically associated with inactivity, while float is associated with activity.
What are the three types of float?
- Total Float or Float.
- Free Float.
- Project Float.
- Interfering Float (INTF)
- Independent Float (INDF)
What is slack time?
Slack time is actually a professional term used in project management to help people figure out just how much time is available between the various steps of a project. It tells you just how much time you have to start a project to keep the project on time.
What is a predecessor activity?
A predecessor is an activity that must start or finish before another activity can start or finish. Each predecessor is linked to the activity by a specific type of dependency.