Setting dependency between tasks is the best way to track their progress. You will be able to set dependency between tasks of the same project in Project Templates . Know more about task dependency. 

Create Task Dependency From Tasks 

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
   
4. Mouse over a task to open a popup.
   
5. Toggle between the Predecessors tab and the Successors tab, then click Add Predecessor or Add Successor.
   
6. Enter the task name you want to link into the Select Tasks field.
   
7. Click Set Dependency to save.
   

Create Task Dependency From Gantt Chart

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
   
4. Click and drag a line from the parent task to the target task in the Gantt chart. A dependency has been created.
   

Hold down the 'ALT' key, then drag a line to the target task to view a pop-up where the dependency type and time lag can be modified.

View Task Dependency  

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
4. The Gantt is partitioned to showcase the Unscheduled Tasks explicitly while the tasks with start (and/or) end dates are found in the calendar view.
   
5. Mouse over a specific task to view its task assignee, start date, end date, and predecessor/successor tasks in the task pop-up. From here you can also perform these actions: 
   
   • Click to add a new task above the respective task or sub task. The new task or sub task inserted is always at the same task level.
     
   • Click to bring the task's corresponding Gantt to view. Also, click the icon and draw a line to the target task to set a new dependency. 
     
   • Click and drag a task between a set of tasks to reorder. Also, drag and place the task over another task to make it a sub task.
     
     

Modify Task Dependency Type 

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
4. Mouse over the task to view a pop-up. Toggle between the Successor or Predecessor tabs to view the linked tasks.
   
5. Click near the current dependency type to modify the dependency. Know more about types of dependency.
   
   

Remove Task Dependency 

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
4. Mouse over the task to view a pop-up.
   
5. In the pop-up, mouse over the linked task name under the Successor or Predecessor tab to find at the right end. Click it to remove dependency between the corresponding tasks.   
   

Set Lag or Lead Using Milestone Gantt

Lag is the time gap between the predecessor and successor tasks. If the lag value is negative, it is known as lead time. Learn when to use lead and lag values.

1. Navigate to Projects in the left navigation panel.
   
2. Click Project Templates from the drop down.
   
3. Select Gantt & Reports in the top navigation panel.
4. Mouse over the task for which time lag or lead needs to be set. A pop-up will appear.
   
5. Click Set time lag under Successor or Predecessor tab and enter the lag or lead value in hours or days.
   
6. Click to save.