When a project is open, the left sidebar expands under Projects to show every destination inside that project. On a phone the same list is in the nav drawer. The order is the build workflow, not alphabetical.
The ten destinations
Overview is the project home: the client card, the Selections list, change order entries, and the totals block at the bottom.
Spec editor is where you enter and change data.
Spec sheet is the branded output view, and the thing you print or hand over.
Rooms holds room measurements and shapes, which feed quantity takeoff.
Boards holds visual selection boards per room, and the entry to the Selections Packet.
Change orders lists the change orders on the job and their signing status.
Order sheets groups items by supplier into a request a purchasing desk can price, and is where supplier quotes get read back in.
Trade packages holds the money free, per trade slices of the sheet you send to subs.
Home manual is the homeowner closeout binder.
History is the timestamped record of what changed on the spec, and by whom.
Everything navigates
Each of those is a page with its own address. That means back and forward work, refresh works, and you can bookmark or send a link to a specific view. Nothing in the sidebar opens a floating window over whatever you were looking at.
Modals are reserved for tasks you start from inside a view, like editing one product or composing one change order line.
The header keeps only the identity
The project header carries the project name, the client, and the address. It used to carry a row of eight buttons; those became the sidebar. If you are looking for an action and it is not in the header, it is a destination in the rail.
The Selections Packet is on Boards
The packet is a boards deliverable rather than a peer view, so its entry is a button on the Boards page toolbar with a path back to Boards. The packet route still resolves directly if you have the link, and it lights the Boards row in the sidebar while you are there.