Making theme button links nofollow? HELP :/

Techy question: Making button links nofollow

I’m creating buttons for my blog posts with my envato theme and want to make the links nofollow. How can I edit the following code to make the link nofollow?

[av_button label=‘LINK TITLE HERE’ link=‘manually,LINK HERE’ link_target=’_blank’ size=‘x-large’ position=‘left’ label_display=’’ icon_select=‘no’ icon=‘ue800’ font=‘entypo-fontello’ color=‘custom’ custom_bg=’#fff000’ custom_font=’#000000’ av_uid=’’ admin_preview_bg=’’]


Contact with your item author hope they will help you out from your issue