Each destination has its own preview and its own Send button, so you can send Slack now and hold the Asana task. After sending, each one keeps a receipt with the time and a link, which tells you it really went out. 3a uses tabs in a side panel, 3b stacks them as two steps, and 3c shows full previews side by side.
Try next: "put 3c's previews into 3a's panel" · "show a failed send and retry" · "add a share-link option"
This is step 3 of the flow. The score is always visible, and overriding a category takes one click. Each layout is denser than the last: 2a shows only the failures in detail, 2b is a full 24-row table, and 2c groups categories by CBMS tab so they match the order of the entry.
Try next: "2b with 2a's detail as an expandable row" · "show the live grading progress state" · "batch view for several students"