how to implement add and remove row functionality in a lightning component in Salesforce?

Hi,

For add new row event:-

<aura:event type="COMPONENT" description="Use For Add New Row"></aura:event>

For remove row event:-

<aura:event type="COMPONENT" description="Event to remove Row" >
    <aura:attribute name="indexVar" type="Integer" description="Use For Delete Row" />
</aura:event>