Time, Tempo, and Meter : Insert Time : Insert Time Options
 
Insert Time Options
Options for the Insert Time command include:
Start, End, and Length
Sets the start and end points for the selection, and the selection length.
Set Meter
If your Main Time Scale is Bars|Beats, Set Meter lets you specify a new meter for the inserted time. The selection is quantized to the nearest bars, and the previous meter is inserted after the selection. If your Main Time Scale is sample-based, Set Meter is not available.