Then yeah, Anchors will do exactly what you’re needing. Select the element in question from the Designer tab in UMG, and at the top right you’ll see the anchor option. Create an anchor. You’ll see options with a lil white square. This is where the element will be anchored to: a corner, a side, the top or bottom, or the center. A little flower thing will appear in the Designer graph. This is where your anchor is. Your element will retain its on screen position in relation to its anchor. For simple testing, make a center anchor, and put your element in the center. Try it with a few different positions to really get the feel of it.
Let me know if this does what you’re wanting!