It doesn't seem to have that choice when I format a chart. You can build anything you want in an array with it however. You can autoexecute from that kind of code but you can't very well display the chart.
The short answer is "no." This one reason why I ended up with MultiCharts, which DOES timestamp and display in seconds, will run from TradeStation data (and from the data of a couple of dozen others) and accept all my EasyLanguage studies.
I had other reasons to go to Multicharts and I do like it so far. I'm seeing it as an adjunct to Tradestation currently. If they get the bugs out and develope a radarscreen I'll probably be seeing Tradestation as... not at all actually. I had problems with the code editor in MC so Tradestation is still great for charts and developmnent but not quite what I want for automation.