(1) Customize your trays. Create new trays that are organized the way you work. (The single “Default Tray” is not meant to really be the way you leave them.)
(2) I have posted screenshots of my 4 custom trays docked to the right side:
See: Layout Trays - SU / LAYOUT Interface coordination - #2 by DanRathbun
On the left I have auto-hidden trays “Help” (Instructor panel) and “Object Tree” (Outliner panel,) that are collapsed to margin tabs, and will slide out into view when ever I hover on or click these tabs.