To get support, service and regular updates, users of Tally need to be registered. The procedure for registering Tally is the same for single and multi-user systems. Tally provides you an option to register later as well.
Go to F12 > Licensing and click Register Yourself button from the button bar.
The following screen is displayed on successful activation.
You can also set a reminder for registration for a later time. Set the optional field Remind me later to Yes and Tally will remind you to register at periodic intervals. If you set this to No, reminders will not be generated.
More:
Registering Tally-if you have an Internet connection
Registering Tally-if you do not have an Internet connection