How do I enter 'or' logic into the predecessor field? For instance, task 4 can start when task 1, 2, or 3 ends. We don't know which of 1, 2, or 3 will begin or end first.

Thank you

  • Wow, this seems like a basic functionality that should have already been included.
    – Spencer
    Mar 11 '19 at 16:43

You can't. "Or" relationships aren't supported in MSP (nor in any other mainstream project scheduling tool that I know of.)

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