On the QField documentation page I saw this
Configure search in QGIS -Choose the layers which are searchable in Project > Project Properties‣> Identify Layers -Define the display expression for the concerned layers, this will be used for searching for features. This is configured under Vector Layer Properties‣> Display page
where do I find the "Identify Layers" and Vector Layer Properties options? Is it on QGIS Desktop or QField? Because on QGIS (I'm using version 3.4) there's no Identify Layer option.
PS: when exporting my QGIS project for QField (1.1.0) the search and measure tools are available, is this a fix or can it be customized?