Your project can be altered to suit your requirement like the calendar or the way the % Complete of the task is calculated.

New tasks will be manually scheduled.
All the tasks that are created in the project will be scheduled manually.
Tasks should start when all predecessors are complete
If this option is enabled, the dependent task will start as soon as the predecessor task is completed. Normally, a dependent task will only start on its start date even if its predecessor finishes ahead of time. This is because we assume that the manager has carefully planned the project taking into consideration resource availability and loading and the system cannot automatically make a call to start the dependent task ahead of schedule. However, in some cases it might be preferable for a dependent task to start as soon as all its successors are complete.

When you enter % Complete against a task, by default the Start(Actual) and Finish (Actual) of the task is its Planned Start and Finish date respectively. If your task finishes early or late than the planned schedule, then you need to change the Start(Actual) and Finish (Actual) of the task when doing a progress update so that the successor tasks are scheduled accordingly.
Do not send email notifications for this project
This option allows the user to disable the email notifications specific to the project.

No notifications for task and project are sent. Notifications for discussion, document, expense (rejected), time-entries (rejected), time submitted on my behalf and Request Progress Update will still be sent.
Always assume this project is on time and budget
This option always assumes that the project is On Time and On Budget. In long running projects, time and budget does not pose much of a constraint as much as the overall performance and efficacy of the project. In such situations, even if a task is At Risk or Overdue, Over Budget, the system always shows it On Time and On Budget.
Auto subscribe team members to new discussion topics
Whenever a new topic is created, team members are automatically subscribed to the topic and they receive email notifications.

Default Task % Complete Method

Last % entered by assigned resource - Whatever last % complete is entered will be the task's % complete.
Weighted avg. of % entered by each resource - It is computed as the weighted sum of percent complete by all the resources assigned to the tasks. This is calculated based on the following formula:
```
% complete of a task = (W1 × P1 + W2 × P2 + ...) ÷ (W1 + W2 + ...) 
 
Where W is the work assigned to the nth resource while P is the % complete entered by that resource
```
To illustrate it further, let us consider an example: If Joe and Mary both are assigned as 10h and 20h respectively on task T1. Now, Joe enters 10% Complete and Mary enters 20%. Then % Complete of task=16%
Auto-calculated from resource time sheet - The Task % complete is calculated on the basis of time entries.
This is calculated based on the following formula:
```
% complete for a task = (Time by user 1 × 100) + Time by user 2 × 100 + ...) ÷ (Allocated hours of user 1) + (Allocated hours of user 2) + ...
```
To illustrate it further, let us consider an example: If Joe and Mary both are assigned 100% on task T1 That is, they both are assigned 8 hours each. Joe’s approved hours = 4 Mary’s approved hours = 8 which means that Joe has finished only 50% of his task while Mary has finished 100%.of her task. Now, the task's % complete = 4 × 100 + 8 × 100 ÷ 16 = 400 + 800 ÷ 16 = 1200 ÷ 16 = 75%.

When the % Complete method is Auto-calculated from resource time sheet, the % Complete box is grayed out. However, you can still enter % Complete for milestone tasks.
Similarly, when the % Complete method is Weighted avg. of % entered by each resource, then only the task assignee can enter progress update against the task. No other user will be able to enter progress against this task.

Default Task Schedule Type

Fixed Work: If a task is Fixed Work, Celoxis automatically shrinks/grows the task’s finish date when a resource allocation is changed.
Fixed Duration: If a task is Fixed Duration, Celoxis automatically shrinks/grows the resource’s allocation when task effort is increased/decreased.
Fixed Units: If a task is Fixed Units, Celoxis automatically shrinks/grows the task efforts when task duration is increased/decreased.

Work Calendar

If no resource is allocated on a task, then scheduling is done on the basis of the project's work calendar.

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