I was sure that Shift-Drag the first tempo mark | the first time signature would move the first bar mark to the right hence adding free time before the first bar.
You cannot move the initial tempo or meter markers.
You can add a BBT marker denoted 1|1|0 anywhere in the timeline that you wish. Note that there are beleived to be bugs still lurking when more than one BBT marker is used.
Yet, when I ctrl+leftClick anywhere in the Bars:Beats ruler nothing happens. Is this feature available by default or is there an enable BBT somewhere ?
Steps to reproduce : new session → ctrl+leftClick anywhere in the Bars:Beats ruler → Nothing.