Modify "simple dial" toolstep to allow non pbx extension calls

We are currently trunking with GoTo Connect and have various non-pbx extension ranges that are mapped to our trunk within the GoTo connect platform. If I dial them from my GoTo client, everything routes to my other solution as anticipated. With the dialing tool steps in GoTo dial plans, there is really no option to do a simple dial unless you are an active direct extension or group within the PBX which overrides any extension mapping. Coming from a lot of prem systems, we could always just dial "digits" and not only just active pbx extensions or DID\TFNs. Would this be possible? Ever?