You may find that you want to capture additional information about the tasks in your project, but you’re not sure where to add that data. To create a new column in the task list on the Tasks page, click Add Column (+) at the top of the far right column of the task list. If the information you want to capture is Text, a Number, a Date and Time, or a Person or Group, you can click that option in the list. Or, if you want to capture information of a different type, such as a drop-down list of different options, currency, or a hyperlink, you can click More Column Types and use the box that appears to add your new column.
Tip: You can also click Create Column, in the Manage Views group on the List tab, to add a new column.
After you have added a column, you may want to move it left or right in the task list. To do this, click Modify View, in the Manage Views group on the List tab. In the Columns section, use the Position from Left drop-down lists to reorder the columns. For more information on modifying a view, see Create, change, or delete a view of a list or library.