Help with insert points

Please be gentle , a newbie .Trying to insert an analogue processor in to mono groups and /or main outputs using sockets at rear of surface .i can get the send to work no problem and the signal arrives at the processor ok ,however th only return path appears to be via channels ,usually 59/60 or thereabouts. I simply want it to return to the group or mains asa appropriate howev e cannot seem to change the return path on the screen.

Obliged to have comments
Regards
Hugh

Reference Guide part 2, page 27 describes this very clearly. By pressing assign button you get directly to patch field.

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