So the toolbar is supposed to have ten (10) items. Whilst the current implementation won’t allow the user to usefully select more buttons from the configurable list, due to a bug, the toolbar can shrink to an even less useful nine (9)…
The Main Menu is one of the configurable items in the Configure Toolbar list in Settings. If Main Menu is dragged from “Always Visible” to “Hidden” (to remove unused/redundant items from the toolbar), the toolbar now shrinks from showing ten items to only nine items in the toolbar. In this state the Help button, when dragged to “Always Visible” is never shown in the toolbar - no matter what other items are configured to be visible.
The Main Menu item is also obstinate in being difficult to reposition within the toolbar - usually requiring other items to be moved in relation to the Main Menu item in the list.
The toolbar really does need more work. As is, it is both unfriendly and inconsistent in its operation. With the Toolbar being the main interface, this item really needs to function properly.
SkySafari Pro 7 (1021)
iPad Pro 12.9” iPadOS 15.0.2