documentation and release note update

refs #16005

docs/source/interfaces/Engineering_Diffraction.rst

@@ -330,7 +330,7 @@ Fitting
              early stage of definition and implementation. Not all
              options may be supported and/or consistent at the moment.
 			 
-.. warning:: The input workspace must be converted into a focussed file
+.. warning:: The input workspace must be converted into a focused file
 			 first. The steps to complete this are found here: :ref:`focus-Engineering_Diffraction-ref`
 
 The Fitting tab provides a graphical interface which fits an expected
@@ -344,7 +344,12 @@ To use the Fitting tab, user is required to provide:
 1. A focused file as Focus Run input by browsing or entering single/multi
    run number
 2. List of expected peaks which can be either by browsing a (*CSV*) file
-   or entering within the text-field simply click on the Fit button.
+   or entering within the text-field
+3. Next click on the *Fit* button if you would like to fit single focused
+   file or you can click *Fit All* button which will enable user to
+   batch-process all the runs and banks when a range of run number is given,
+   *Fit All* process may also be used when when a single run number is given
+   or a file is browsed
 
 .. _ExpectedPeaks-Engineering_Diffraction-ref:
 
@@ -386,7 +391,7 @@ Output
 ^^^^^^
 
 Once the Fit button has been clicked Mantid will process the data. Please wait
-until the Fitting process has completed. Upon completion you should be able to 
+until the Fitting process has completed. Upon completion you should be able to
 view on the Fitting tab which will contain:
 
 - The focused workspace plotted in the background in gray crosses.
@@ -406,6 +411,10 @@ workspaces window:
 3. The *engggui_fitting_single_peaks* workspace with each workspace
    index representing individual expected peak.
 
+During the Fit process, :ref:`SaveDiffFittingAscii <algm-SaveDiffFittingAscii>`
+algorithm will be utilised to save *engggui_fitting_fitpeaks_param*
+TableWorkspace as a `csv` file.
+
 In the plots, the x or abscissa axis is in d-spacing units, which are
 more convenient for peak fitting than time-of-flight. However the run
 files and the focus files are normally stored as time-of-flight

docs/source/release/v3.8.0/diffraction.rst

@@ -45,6 +45,12 @@ Engineering Diffraction
 - :ref:`SaveDiffFittingAscii <algm-SaveDiffFittingAscii>` an algorithm which saves a TableWorkspace containing
   diffraction fitting results as an ASCII file
 
+- New *Fit All* button on the Fitting Tab will enable user to
+  batch-process all the runs and banks when a range of run number
+  is given. During the Fit process,
+  :ref:`SaveDiffFittingAscii <algm-SaveDiffFittingAscii>` algorithm
+  will be utilised to save *engggui_fitting_fitpeaks_param*
+  TableWorkspace as a `csv` file.
 
 Powder Diffraction
 ------------------