You can quickly and easily delete multiple leases from a list, if needed. To do so:
Click File > Delete Multiple Leases
Select the lease(s) you want to delete
Note: For on-prem versions, this uses the same list methodology as Copy to New Database. Thus, check the box in front of the leases you wish to delete.
You may also upload a list of lease numbers, either as a text file or as a spreadsheet with the lease numbers in column A.