Affinity Photo Move Tool. Think of it as a deck of cards with the last card on top. Save your file in Affinity Photo or Affinity Designer they are 100 compatible.
Once selected the Move Tool allows you to move rotate and resize the selected content. In PS I used to be able to select an area of an image then drag selection to a second image document tab and it would plant into the second image document. This allows you to see the effect of brush strokes before you apply them.
Then select the tool you want and it will be on top and selected.
However you can also create vector shapes in Affinity Photo by using the pennode tools or the shape tool. Undo tasks performed in other Affinity apps. Move work between Affinity products Affinity Designer and Affinity Publisher can be purchased separately Shared Affinity Format and History Design across disciplines as easily as switching tools or personas. You can resize your image with the Move tool.