Change "First Name" tag on group member page only

Hi
I understand that it is not possible to switch the "first name" tag off as it is a required component.
I have changed it in the translation file to read "Name" instead of "First Name" but what I really want is for it to say "Rider Name" on the group member information page but just say "Name" on the billing page.
I think this should be possible by changing the code in the group_member.php file but I do not know enough about php to get this to work.
Can anyone help with this please?

I've managed to work out how to do this myself