Comments allow project members to communicate with each other. High-level authorities can use them to dispatch orders to their subordinates. Above all, the most important aspect of this feature is that it allows members belonging to different ranks share their ideas, discuss what they are doing, and work towards the betterment of the project.
Adding: Click on Comments Tab. Type your Comment and Save it
Deleting: Click on Delete Button to delete a Comment.
Mentions
The comments field is enhanced with '@mentions' and special entity keywords to notify the users and entity owners. Below are a few examples of keywords.
@PROJECT_OWNER --> to notify the project owner.
@TASK_OWNER --> to notify the task owner.
These keywords can be used only if the entity owner is assigned to the respective entities.
For Projects, Milestones and Project Tasks, users with view permission to the entity can be mentioned in a comment. But for other tasks(Request, Problem), all the technicians from the user's site can be mentioned. Users can be mentioned using user id while adding comments through APIs. For example, @[user:4] where 4 is the user id. Users mentioned in the comment will be notified by email (if email id is provided for the user) and through Technician Space notification. In addition, the 'reply' option is provided to keep a track of responses to the comments. The user who has posted the comment can edit/delete the comment. But the entity owner can only delete the comment.
Project history records all actions performed on the project. Track the history of a project from the History tab in the project details page. Various operations are grouped and listed by date.
Role Required: SDAdmin, Users with View Project permission.
On adding or updating the scheduled start time of the project, child entry updates are grouped under the View Auto Propagated Entries link.
Click Show Filters to display operations based on specific criteria such as Operations, Performed by, Show Only, and Fields. You cannot filter the history based on additional fields.
Click 
to sort the listed operations in ascending/descending order.
Use Date Filter to refine the history based on custom range or predefined values.
Click Recent Updates on the top-right of the project list view to view all the events that occurred across various projects. You can use the Show History filter in the recent history updates to display history based on specific criteria such as Operations, Projects, Performed by, Show Only, and Fields.
