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Piece of cake!

I selected the block of rows from your post, did Edit->Copy (command-C), switched to OmniPlan, clicked on the dot at the beginning of the last row, then did Edit->Paste (command-V). Every line on the clipboard gets turned into a separate task. This applies to all Omni outlining apps.

If you want a particular duration (or effort) for the bunch, after you paste, but before you do anything else, bring up the inspector and put it in for all of them at once.