There may be times when you want to display timeline or category information from more than one list column in a gantt chart. For example in the chart below we have taken information from the “priority” and “title” columns of a list to populate the category labels.

With Planner you can show multiple columns in the Category or on the Timeline of a Gantt chart by using a calculated column to merge fields together.

For example to merge Priority and Title columns together you would :-

• From your list click Settings > Create Column
• Set a name such as “Category”
• Choose Calculated for the type
• In formula enter (where [Title] etc is the name of the columns you want to merge)

      =[Priority] & " : " & [Title]

• Uncheck ‘Add to default view’ checkbox if you don’t want this appearing for the normal list view.
• In Planner you can now select this column.

You can merge multiple columns together, for example :-

   =[Priority] & " : " & [Title] & " - " & [Assigned To]

You can also use SharePoint standard functions and formula (many similar to excel) such as :-

   =Text([Start Time],"mmm-yyyy") " : " & [Title]

Which would prefix the Title with Month and year, like so  October-2009 : Your title here

To display the the duration in days you could use

   =DATEDIF([Start Time],[End Time],"d") & " Days"

See some more examples of common functions