autodesk advance steel, adding holes and bolts

hi hope all is well, im trying to add a couple of holes to the top angle as seen in attatched picture so the horizontal beam can be bolted on and off to the vertical column, im using autodesk advance steel, i was wondering if there are tools similar to autodesk inventor where i can mark a circle and extrude cut or is there a hole command and also if it is possible to put your own holes anywhere in advance steel can you add bolts.
Any help much appreciated, thankyou kindly.