Add card to pointer via link

I have a "task" cardtype for to-do items, much like this site's ticket system. I've got another group of cards named after each day of the week. Each day-of-week card has a +related pointer which holds task cards.

I would like to add a link to the task+*type+*structure which add's the _self task to one of the day-of-week card's +related pointer. Something like this: [[update/Monday?_related=\{{_self|linkname}} | add task to Monday]]