What a workspace separates, and what every workspace shares

A workspace is a separate set of meetings, and Recordstead starts you in one called Personal. Everything you record, name or teach it belongs to the workspace you were in at the time. What a workspace does not separate is the app's own configuration: every setting is shared by all of them.

What belongs to one workspace

Your meetings, with their recordings, transcripts and summaries.
The people you saved: their voices, and the names you confirmed.
Your Dictionary terms.
The summary templates you wrote yourself. The built-in templates are not yours to begin with, so they appear in every workspace.

What every workspace shares

Every setting, including where summaries are generated, the summary language, how long things are kept, and which microphone is used.
The transcription and speaker models, which are downloaded once for this Mac.
Recording, call detection, and the macOS permissions behind them.
Whether Recordstead may recognize a voice across meetings. The saved voices themselves are already separate, so the switch has nothing left to separate.

The app states the same split in two lines when you create a workspace:

Its own: meetings, people and voices, dictionary, templates

Shared with all workspaces: settings, models, recording

Which workspace a new recording lands in

A recording belongs to the workspace that was active when it started, and it keeps that workspace even if you switch while the call is still running.

Recordstead reads the workspace once, at the start. Beginning a client call and switching away to look something up is ordinary, and a recording filed under whatever you happened to be reading when the call ended would be in the wrong place. If more than one workspace exists, the notification that says a recording started names the workspace it went to.

If it went to the wrong one, it can still be moved. See Move a meeting to another workspace.

Search and Ask look in one workspace

⌘K searches the workspace you are in, and says which one: the field reads Search in Acme when you are in a workspace called Acme. Ask, which is in beta, answers from the same workspace.

There is no search across all of them at once. That is deliberate: a workspace exists to keep two sets of meetings apart, and a search that reached into both would undo it.

While the Mac is busy

Home names the recordings being processed for this workspace and counts the rest. You can see that the Mac is busy without seeing another workspace's meeting titles.

Opening a meeting that lives somewhere else

Recordstead can open a meeting from another workspace, for instance when you open one from its notification. It opens in its own window and does not switch you. Every other view keeps showing the workspace you are in.

Result

For anything Recordstead holds, you can say whether switching workspace changes what you see.