Question regarding Guitar Pro's Let Ring function

So, I’m currently in the process of making a tab for a Lithuanian song that I’m learning and I just got to ask: while GP 7.5 does have Let Ring function, however, if there is another tab, you cannot here the ringing-out sound. Is there a way to lengthen it or something? For example, I want the last beat in the bar to ring-out, I highlight the power chord, but since there is another bar with other power chords going after it, the system does not let the chord to ring-out. The chord only rings out if is is the last bar and there are no other bars after it. Any thoughts?