Yes it is possible to have 2 people working from the same PC using reverse switching see Belkin Reverse KVM Switches. If you go into click here and put in a search you will be able to get the information you need and find suppliers. Make sure it will work before you buy. Belkin used to be very good at giving advice. There may be some one in the forum who uses reverse switching and can more help. Maplin also sell this type of gear their site is click here and they have shops in several places. The staff in their shops are very helpful.