Map Mavin - How to Edit Layers in Map View

As long as the map is one you've made or has been shared with you and you've been given editing privileges, you'll be able to make edits. To do so, click the hamburgeler icon (the three dots next to a layer name) when viewing a map and then select Edit Layer.

From here you can either click on Feature Attribute Table and edit the attributes directly, or you can click on features in the map and edit them individually.