A blue suit with tie frames a pale blue shirt. The dark single-breasted jacket is open enough at the front to show the longer central tie area and black belt. One hand rests in a trouser pocket while the other falls beside the body; dark lace-up shoes complete the look. The quiet front arrangement is readable. No name badge, microphone or carried documents appear. The picture therefore shows a base combination rather than its complete arrangement for your particular event role, whose additions need their own actual trial.
Try the real pieces with both hands outside pockets first. Add the planned badge or lanyard at its intended position. Which pale shirt field stays visible beside the tie? Compare knot and length on the worn outfit. Test actual technical equipment with the responsible team if presenting, rather than inferring its eventual position from an unobstructed front. Choose small further accents afterwards. A clear middle can already be a deliberate choice without requiring an extra pocket detail, keeping the task-specific additions visible alongside the main shirt-and-tie arrangement.