Display Screen or Portion Thereof with a Group of Graphical User Interfaces

The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee. FIG. 1 is a front view of a display screen or portion thereof with a group of graphical user interfaces showing the claimed design; and, FIG. 2 is another embodiment thereof. The broken lines in the figures show a display screen or portion thereof, and form no part of the claimed design. Each of FIGS. 1 and 2 indicates a group. The elements of the group are arranged relatively on the drawing sheet for the convenience of illustration, and the placement of each element relative to another, or to the drawing sheet, forms no part of the claimed design.