You can do it but you would have to update the value of SPY volume MA20 each day.  

You can get the volume MA 20 for SPY from the chart or a column formula. Then use the following in your scan:

AVGV20/SPYVOL > 1.xx

where SPYVOL is the number you have to enter manually and the .xx is the percentage you're looking for.  1.02 would be 2% greater. 1.5 would be 50% greater.

You can run it in a browser but the preferred method is to download the Parallels client and run it locally.

https://www.tc2000.com/anywhere

No, you can't mix time frames in a custom condition, but you can create individual conditions and add them all to an EasyScan.  

Click Tools > System Settings > General and uncheck "Show number column on personal watchlists".

Upon further inspection you're correct. Enter that formula into a Custom PCF Formula, not a Custom % True formula.

If you're using version 7, then click Add Indicator > Custom > Indicator.

You need to pair the booleans with ANDs.

A > B and B > C

A > B > C is not valid.

Depends on what you mean by slower. There is a little bit of lag when dragging windows around the desktop, but running side by side with the Windows version there's no lag in the real time data, indicators, watchlist values, etc.

We're getting close to releasing a version that runs on Parallels which is hosted on our servers.  You will not need to install Parallels to your Mac.  I don't have an exact ETA at this point but we're finalizing the programming so I think it should be ready sometime in early February.

This is correct:

What is Volume Buzz? At any given point in the trading day, the indicator looks back over the previous 100 days and normalizes the volume at that point in the day. Then, it makes a comparison of today's volume with that norm. (E.g. At 9:45 a.m., it compares the volume of the stock at 9:45 a.m. for the last 100 days, creates a norm and then compares today's volume to that value. A value of 200% at 9:45 a.m. Indicates that the stock is experiencing more than 3x its normal volume for 9:45 a.m.)

Where did you get the first definition?  You said from support, did they email it to you?

You're welcome.