Work items

A work item card can carry:

• Title and a markdown description.
• A billing-category tag (which task category it bills under) and, separately, freeform labels for your own organisation.
• Priority — Low / Medium / High / Urgent.
• Multiple assignees.
• Estimated hours — the allocation for this item; leave it blank for open-ended work.
• Start and due dates.
• A billable toggle, defaulting from the project.
• A subtask checklist, comments (with @mentions), and file attachments.
• Dependencies — mark one item as blocked by another.

Tracking on a card

Each card shows every time-tracking session against it (who, when, how long) and a rolled-up total across all assignees, plus a progress indicator comparing tracked time to its estimate.