The menu bar

The owl in the menu bar shows how many sessions need you, beside it when there are any.

The menu bar owl with 2 sessions needing you

Its menu lists the sessions waiting on you (choosing one opens Heed on it), how many are working, and:

The menu: the waiting sessions, Start work, Open Heed, Settings, Quit

Item
Start work… The Start work panel, over the app you are in
Open Heed Heed to the front, reopening its window if it was closed
Settings… Settings
Quit Heed Quit; with agents running, Heed asks first

With the menu bar item on, closing the window keeps Heed running, and every agent with it. Without it, closing the window quits.

[ui]
menu_bar = true