Bucket of tasks

Same idea as slots, but that don't need to be on the calendar yet. For instance, if I check in on invoices once a week, I might want to have a "check in on invoices" task planned for this week, and in there I might want to drop any questions that I've received in my email or in Slack during the course of the week. It would be so nice to be able to keep them organized, and put them all on the calendar into a single slot instead of needing to move them all around individually and add them all individually to the slot when I finally created it.