Sorted.
It is possible via Window/Layout/Edit.
1. Click on one of the Tool tabs (Capture, Adjust, whatever) and put whatever tools you want in that tab.
2. Open Window/Layout/Edit and click +.
3. Give it a name - e.g. Capture Tab Edited.
4. Click Update From Current.
5. Lock the lock symbol.
6. Click Ok.
Now each time you open Phocus, the default tool set will appear in any given tab. But, you can go to Window/Layout/Edit and choose your own preset.
D.