Increasing delay or pause time on a recorded show.

While watching a recorded show, if I put it on "pause" or "hold" the time seems to be quite short.  It starts to play again all by itself.    I would like to increase the time period of the "hold" but I cannot find any setting to allow this.  Where would I look to change this parameter.  Second issue is, I have to press "mute" twice in order to get the system to "mute"......  Can this be changed?   It would be nice if it "muted" on the first press.   Third issue -  On live TV - if I press "mute" the sound comes back on rather quickly - how and where can I change that setting - or is it not possible.

Thank you for any assistance,

Boo.