Benltey View V8i open file in the same program after double clicking

Hello,

is there's a way to make file open in the same program (if one is open) after double clicking it?
Every time I double click on a file it opens whole new v8i program, instead of opening that file in existing program.

So I either have to drag and drop file to the already opened program or use File>Open option. Double clicking files just opens a lot of program windows.