Deleting a half bar (4/4)

Hi,
I got problem which I couldnt solve so far. I want to delete the first 2/4 of my 4/4 bar. How can I manage this? By changing the time signature I can only delete or add sth at the end and not in the beginning of my bar.

Use Step Edit go in to what you want to delete and delete it.

Hit the erase button select track or select track 0 for all tracks and enter ticks

Thats it! Thank you DukeNewport!