Like any other kanban software, really. I have Backlog, To Do, In Progress, and Done columns on my main board. Cards start in the Backlog, where they may or may not have any detail on them.
Once they're fleshed out a bit, I'll move them to To Do. When I start working on them, they go into In Progress, and when they're done, they go to Done. Every Sunday I archive all cards in the Done column.
I use Todoist for recurring or important, well-defined tasks.
I use Apple Calendar for events I need to remember.
That's pretty much it.