Adding new row to a table

hi pls help me am new to webmethods this question may look silly
i have to create a caf screen where user will enter his phone number if he want to add one more number he has to press a + icon and another text box must open like this he can enter n number of numbers i have to do it with table not with hidden panel pls help

jst i have to add rows to a table which copy the controls from the previous row

Try to using Add row button/icon on Palette