These buttons will appear when you are in Shared with me, Recent, Starred, or looking at Search results in Drive. When you select a document in one of these views, the below bar will appear at the top of your Drive page.
For example, if you are in the Shared with me page, the documents in this folder may not all be stored on your Drive. To fix this, Google has introduced the Add to Drive button
Speaking of moving a document, a second button that has been added to the top bar of Drive is Move to. If you have selected a file and it is already stored in your Drive, then this button will appear. Additionally, if you’ve recently clicked the Add to Drive button, the Add to Drive button then converts to the Move to button.
These two buttons will be available in the top bar of Google Drive in the coming weeks. Keep an eye out for the Add to Drive button in top bar of the Drive homepage, as well as in the top bar of the preview window.
You can find the Move to button in the bar at the top of Drive homepage, or it may also be located under the “…” button, as highlighted below.