controlling mode,time and index of propeller clock using switches

hi all i just started building my propeller clock.Mr.luberth propeller clock page helped me a lot.thanks luberth. actually i want to controll functions in propeller clock(having both analog and digital) from the base while googling i found below site.

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this circuit uses 2 switches to controll time and mode from problem is placing the IR led's and detectores.where to place them on the board. have a look at the picture.its my guess it right.if not where to place them help me pls thanks

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