Enter the number of desired repetitions in the Number of Copies field.
To have the repeated regions snap to a particular grid value, choose a value from the Adjustment pop-up menu.
To paste the copies as regions, select As Copies (default).
To paste the copies or aliases for MIDI regions, select As Aliases.
Note: When you repeat a looped region, the copies may overlap any existing loop repetitions of the region.
Download the guides:
Logic Pro User Guide: PDF