I would like to have a keymap in QGIS as in ArcGIS Desktop. ArcGIS Desktop allows one to add two layers. You then load the main layer in the main map layout and another in the keymap and style them as preferred.
In QGIS, I load layers that I can group. Then on the layout, I create two maps (add two separate maps with different sizes). The main one and the key map. However, all layers loaded in the project shows up in the two maps added on the layout. How do I separate the two maps and style them accordingly. I tried to have two groups, style as prefered and then lock the key map, however after I reload the other layers, they still show on the locked key map.