How would I sort on the linear regression % slope and channel in version 12.3? I used to be able to do it in older software by right clicking on the indicator and selecting these options. What now? Thanks.

The Channel, Visual Value, Visual Change, Net Change and % Change sorts from TC2000 version 7 are not available in TC2000 version 12.3 for most indicators (channel type indicators allow Net Change and % Change sorts). The Actual Value sort can be added to a WatchList by clicking on the indicator and selecting Show values in WatchList.

It is possible to create Indicator Formulas for Linear Regression which could be used to Linear Regression % Slope.

PCF TO RANK MUTUAL FUNDS USING LINEAR REGRESSION LINE

Neither the Linear Regression Line or Moving Linear Regression indicators in TC2000 version 12.3 have a channel on which you could calculate a channel position. It is possible to replicate the Moving Linear Regression with channels from TC2000 version 7 in TC2000 version 12.3 using a Custom PCF Channel Indicator, but the same is not possible for the Linear Regression Line indicator.

Using Linear Regression vs Classical Peaks/Valleys for Divergence Analysis
Linear regression channel calculations

You could also use formulas to determine where price is relative to these channels.