Open your account by entering your secret passphrase in the text field, and then click on the > symbol.
Click on the Send NXT link on the top navigation bar in the client window.
A popup labeled Send NXT appears. Complete the fields as follows:
Recipient Account : enter the Nxt account of the receiver.
Once the account of the receiver is entered, a text field will appear at the bottom of the window telling you if the receiving account has a public key, and the current balance of the account. You can use this information to help verify that you've entered the correct account address.
Amount : enter the amount of NXT you would like to send. If you are going to send a fractional amount (a number with decimals) remember to use a point ( . ) instead of a comma ( , ) before the decimal part of the amount.
Fee : Enter the number of NXT you wish to use as transaction fee. The software will suggest a fee of 1 NXT for every 1000 coins sent (which equates to 0.1%), but you can set the fee to as low as 1 NXT for any transaction amount.
Deadline : enter a small number (1 hour is fine; the default is 24 hours).
Secret phrase : in order to send a transaction, you need to enter your account's secret passphrase.
Click the Send NXT Button.
The Send NXT button will change to Submitting... while your transaction is being prepared.
In the upper right hand corner of your browser window, the message NXT has been sent! will appear.