wachins

hello everyone. I just spent several hours reading through DCS forums and topics about exporting data to second monitor. OK,I have a M2K 2 screen setup problem. In my case ,main screen is 1920*1080(left up),and I will use it to M2K cockpit. the secound sereen is 1440*900(left down),and I will use it to M2K Radar.right up screen I want use to chat app(RC or TS..etc) How to set?