Umm ... I ran out of bars (basic usability question)

Hi Folks,
I have returned to Notion after a break since I am now using it to enter piano parts for learning violin.
It's a bit overpowered for that purpose, but anyway...
So I have now entered a page of the piano part ... and have run out of bars.
A search through the User Guide revealed nothing.
How do I persaude Notion to give me more bars? Shouldn't it do this automatically?
Cheers,
Ed
I have returned to Notion after a break since I am now using it to enter piano parts for learning violin.
It's a bit overpowered for that purpose, but anyway...
So I have now entered a page of the piano part ... and have run out of bars.
A search through the User Guide revealed nothing.
How do I persaude Notion to give me more bars? Shouldn't it do this automatically?
Cheers,
Ed