Most companies use straight line amortization. However, if you normally use a different amortization method that EZLease supports, you may select it here and all new leases will automatically have that method. (You may always change the method for an individual lease.)
When you change the default amortization method, you are given the option to change the amortization method of all leases in the current database to the new default.
This option is selected in File > System Options.