No, it's not possible to give your digital access to someone else.
At GUTS, when you give a ticket as a gift, you share it with someone (read more here), this is not possible with tickets for a livestream.
With a livestream, you can purchase a maximum of 1 ticket that ensures you access to the livestream (read here how to login).
Of course you can always watch the whole family via one stream. But if you can't sit next to each other on the couch, you need your own ticket.