RE #26849 Add cropping info to documentation

docs/source/interfaces/Engineering Diffraction 2.rst

@@ -11,7 +11,9 @@ Interface Overview
 
 This custom interface will integrate several tasks related to engineering
 diffraction. In its current state it provides functionality for creating
-new calibration files. This interface is under active development.
+and loading calibration files, and focusing ENGINX run files.
+
+This interface is under active development.
 
 General Options
 ^^^^^^^^^^^^^^^
@@ -27,6 +29,11 @@ Instrument
 ?
     Show this documentation page.
 
+Settings
+    Provides a range of options that apply across the entire interface, currently
+    providing the option to change the default output directory and force the
+    recalculation of the vanadium correction files.
+
 Close
     Close the interface.
 
@@ -37,9 +44,10 @@ Red Stars
 Calibration
 -----------
 
-This tab currently provides a graphical interface to create new calibrations
-and visualise them. It also allows for the loading of GSAS parameter files created
-by the calibration process to load a previously created calibration into the interface.
+This tab currently provides a graphical interface to create new calibrations, using the
+:ref:`EnggCalibrate<algm-EnggCalibrate>` algorithm, and visualise them.
+It also allows for the loading of GSAS parameter files created by the calibration process
+to load a previously created calibration into the interface.
 
 When loading an existing calibration, the fields for creating a new calibration will be
 automatically filled, allowing the recreation of the workspaces and plots generated by
@@ -52,14 +60,18 @@ Creating a new calibration file generates 3 GSAS instrument parameter files,
 one covering all banks and separate ones for each individual bank. All 3 files are written
 to the same directory:
 
-`Engineering_Mantid/Calibration/`
+`<CHOSEN_OUTPUT_DIRECTORY>/Calibration/`
 
 If an RB number has been specified the files will also be saved to a user directory
 in the base directory:
 
-`Engineering_Mantid/User/RBNumber/Calibration/`
+`<CHOSEN_OUTPUT_DIRECTORY>/User/RBNumber/Calibration/`
+
+Cropping
+^^^^^^^^
 
-Currently, the `Engineering_Mantid` directory is created in the current user's home directory.
+The interface also provides the ability to restrict a new calibration to one of the two banks
+or to a custom list of spectra.
 
 Parameters
 ^^^^^^^^^^
@@ -74,6 +86,13 @@ Calibration Sample Number
 Path
     The path to the GSAS parameter file to be loaded.
 
+Bank/Spectra
+    Select a bank to crop to or specify a custom spectra will be entered.
+
+Custom Spectra
+    A comma separated list of spectra to restrict the calibration to. Can be provided as single spectrum numbers
+    or ranges using hyphens (e.g. 14-150, 405, 500-600).
+
 Focus
 -----