On main windows there is a engine list. This list can be on left side or on top side of window. To change position select from menu: 'Engines' => 'Engines: list horizontal'
Width (or height) of engines list can be change by dragging line between list and panel:
It is possible to have two (or more) columns (or rows) of engines
If there is a lot of engines on list then it is possible to short not-selected engines. To short non-selected engines select from menu: 'Engines' => 'Engines list: short'
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