I have a macro that’s a bit like that, so I’ve modified it for what you might need. See the picture. You can’t just select all the events and run it though, you have to run once for each gap you need, many times in other words. If you assign a key command then you can use keyboard auto-repeat, i.e. just hold the key down, it should be fast and it’ll loop back to the first event on the track when if does the last one so no biggie if you do it too many times.
The macro uses 5xNudge to create the gap - and size of a Nudge is given by the Grid Type. NOTE - the macro also resets the Audio Snap point to the start of the audio event to make sure the event is moved correctly.
So, for 1/2 second gaps:
- Change the ‘Selected Primary Time Format’ to seconds (on the transport bar)
- Set ‘Grid Type’ to be 100ms (the snap value) - this gets applied 5 times
- Select the first part on the track and run the macro many times, it will step through the events