You enter the license information in Licenses window (DayLite Menu -> Licenses). That window will show you all your current license and their expiry dates.

To add or remove licenses, use the buttons at the lower right of the window.

If you have multiple licenses and multiple computers, you have to enter every license on every computer.

For example, if you purchased 2 individual copies (licenses) of DayLite and you have 3 computers, then you must enter both licenses on all 3 computers.

DayLite works on a concurrent use model. You only need licenses for the number of people that will use DayLite at the same time on the same or different databases. You can install DayLite on any number of computers.