If you do not need a tray for a while, you can hide it. It disappears from the board without being deleted and can be shown again at any time.
1. Open the column selection
Above the board, click the columns icon (next to the search field). The “Select Columns to Hide” selection opens.

2. Hide or show a tray
Next to each tray there is an eye icon. Click it to hide the tray – the eye is crossed out and the column disappears from the board. Clicking it again shows the tray again.

3. Result
The hidden tray (“Finance” in the example) is no longer shown on the board. Your selection is kept until you change it again.

