Start delay setting location?

[boater]

I have the miniDSP UMIK-1 calibrated microphone and I'm using REW V5.20 Beta 26 (just updated today to Beta 27). I have been trying to read everything that I can and watch all the videos but I still have a few questions before I start meaningful room measurements in order to find the best locations to place my newer SVS PB16U and old SVS 25-31 PC+.
1) In some of the videos that I have seen as well as some of the recommendations on this forum, it is advised to have a "start delay" prior to taking the measurement so that I can exit the room prior to measurement starting. I see that start delay button in some of the older videos on the "Make a measurement" screen but I haven't been able to find it on the current version of REW. Can someone tell me where to find the "start delay" setting?
2) On my initial subwoofer measurements from 10 to 200 Hz, I noticed sound also coming from my left and right front main speakers. Is that supposed to happen when I'm just trying to measure the subs? I don't see a place in REW where I can turn off the front main speakers. Is there a place to turn them off or should I just unplug them prior to taking measurements?
3) I have a Denon AVR 8500H and I have already run Audessey xt32 for all of my speakers including the subwoofers. I have Dynamic EQ turned on. Should I disable this room correction prior to taking measurements?

I'm sure that I will have more questions later, but if you can help me with these 3, I think that will get me started on the right track.

 

[John Mulcahy]

The start delay control is just to the right of the sample rate selector.

Just unplug the mains when you don't want them to be active.

Dynamic EQ should be turned off for measurement.

 

[boater]

Thank you John. I see the delay setting now. I guess that I need to get my glasses re-calibrated. Is it recommended to unplug the mains when you just want to measure the subs for their best performing room location?

 

[John Mulcahy]

That's the easiest way if you are using left and right to send signals to the system. If you are using an HDMI connection and ASIO4All the sub can be driven separately using the LFE channel.

 

[boater]

Thanks John. I am using an HDMI connection from my laptop to my Denon AVR however I'm using Java for the driver because I couldn't figure out how to get ASIO to recognize my AVR in the Outbox drop down while Java had no trouble finding it. Any thoughts on why that may have happened? Other than being able to isolate the LFE channel are there other benefits to using ASIO4all as the driver vs. Java? I see other users using one or the other in the various on line video's.

 

[John Mulcahy]

ASIO4All seems to have issues with HDMI audio on some video cards. The only real advantage is being able to route signals to other channels without messing about with the connections.