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Currently we dont have support for this.
Need to provide support to select mulitple records which must be enabled by long pressing a record (touch interface).
Detailed explanation below:-
We understand that Ctrl-Click and Shift-Click capabilities are present...and we will use them in certain scenarios. However, for some scenarios such as when working with a Tablet (iPad, for example), we would like to be able to select/tap a row in the Gantt Chart and HOLD...while dragging the finger down to select other adjacent rows. This will be helpful in situations where a keyboard is not present and clicking Ctrl or Shift is not possible. Here's a series of screen shots to demonstrate...
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