How to pan on a MacBookPro trackpad?

The trackpad on a MacBookPro allows many gestures, including zooming, panning. However I cannot find a way to pan inside DraftSight software. I have tried to assign this feature to a keyboard shortcut (spacebar), but the default setting evokes a previous function to be executed. Is there a way to integrate pan gesture into the trackpad or simplify its use by assistance of one-button keyboard shortcut?

Thank you in advance!