Devine outbound route for just some extensions

Hello,

Now etensions select an outgoing trunk, depending on the dialplan.
Is it possible (using the FreePBX webinterface) to assign trunks to extensions, so it is possible that extension 201 uses the PSTN lines and 202 makes his calls using a VOIP provider? (without having to add some prefixes in the extension devices)

Maybe an item for the future: Devine Outbound Groups, assign extentions and routes to that group)

Many thanks in advance,
Arend