Use Direct Routing to send the Instrument Track’s output to 2 different Group Channels. Although not sure if Elements has direct routing. An alternative is to use the Instrument Track as the DI and then use a Send to route the signal to an FX Track with the amp sim on it (or vice-a-versa). Or if your amp sim has a Mix control on it you can use that to control the DI/FX mix all on the single Instrument Track.