I am trying to manually select features visualized on a map to change an attribute of several features at once by highlighting them on the map using the "select features tool".
I'm using the multi edit toggle so that I can modify field data for all selected features at attribute table. The problem is that there are so many data points/features that are in the same location or close proximity that I cannot verify each point is selected, and it appears that features that are not visible are not being selected/the attribute change is not applied.
How can I select (and deselect) manually all features in the geographic area that I am selecting? Essentially, I am trying to clip manually.