Help with chemistry questions please

Given the disubstituted cyclohexane structure: Place the isopropyl group and bromine on the correct positions of the chair structure below to give the most stable, lowest-energy conformation. Assume that any empty targets contain hydrogen. How to select atoms (1) Select one atom at a time with single clicks. (2) Deselect single atoms with single clicks, as well; no need to hold any other keyboard keys. Select all non-hydrogen atoms located in axial positions