Parallel execution of the flow

Dear community

1. Is there any way how to avoid concurrent execution of the OO flow?

I'm trying to achieve, that the new run of certain OO flow won't start while another instance of the same flow is still being executed.

2. Is there any way to check (from OO flow), if there is any running instance of a particular OO flow? If I'm able to get such information, than I can control the OO subflow execution as required in Point 1.

Thanks for any ideas

Best regards