@acer sir current colorbar is ok, only need to control its height as per the diagram or desire. Below is the PNG that I saved after running the above sheet. 

@sand15 Thanks sir,let me try and if there is any error, will update.

@acer thanks sir and its working good. Is it possible to contorl the hight of colorbar according to desire becasue the hight is greater than the 3D plot on my screen.

@sand15 Thanks, sir, and it's almost ok, but is it possible to show the lines as well on the shadow, like given in the main surface plot?

@sand15 Thanks, sir. Finally, I understand the concept of Cell, and now it's working well. I read your post regarding bar graphs; you did a fantastic job and are still cursing about one thing in that file.  First, you saved some numeric values in the option of "Data." May I ask where you are getting those values from? Below is the screenshot of this step..........And if it is generating automatically randomly in the range 2...3, then is it possible to save actual data like this separately from my above problem and then paste it here to generate this kind of bar graph?

The other is about labeling. The label of the axis looks like Nu, "We=[0.05..0.5], and Br=0.1,0.2,...0.9]."

Here is the file you uploaded in your post.

BarGraph_2_Categories.mw

@sand15 thanks sir and let me try again, will update if there is any issue. Actually, I am not getting the cell option.

@sand15 Sir when I run your suggestions.

  print(display(Legends));

  C1 := Cell( InlinePlot(All), columnspan=7 ):
  C2 := Cell( InlinePlot(Legends) ):
  TC := Table(seq(Column(), k=1..8), widthmode=percentage, width=60, interior=none,
          Row(C1, C2)
        ):

The plot looks like this

Here is Maple's worksheet.

Bar_view_help_sand15(bis).mw

Below is my new try to show the legends at the bottom of the graphs, but the legends appear at the horizontal axis.

Bar_view_help_sand15(bis)_New.mw

Both files are ok and producing similar graphs except for the legends. Sir, choose anyone and help in adjusting the legends to the proper place.

@sand15 sir when I incorporate your suggestions regarding display, the main graph disappers and only enlarge legends appear on my side. Besides, I read your suggestions about display of bar graph. I am interested in group bar graphs as appear in our latest maple sheet ao ignore the values on each bar. Sir only help to fix the legends at proper place and keep rest of things same.

@sand15 Sir, I tried many times to download your file, but I couldn’t because of an error. Additionally, the issue with the legend settings remains; the view is still unclear. I tried something in which the legends are now appearing above the graph axes, but I am trying to shift them to the bottom so they don’t mix with the axes, but I am not able to do it. Can you help me with this? In addition, is it possible to automatically add the numeric values on top of each bar so that the correct values appear above every bar? Please help me with this.

Bar_view_help_sand15(bis)_New.mw

@sand15 thanks sir for your alot of help. I will read your code and learn and if there is any issue issue I will let you know.

@sand15 Thanks alot sir for your alot of help. I read your instructions but when I click there is no change. Let me run witjh above suggestions

@sand15 , after replacing, its working, but legends looks not clear. For example in screenshot. Simialr for all graphs

@sand15 sir, when I run your Maple shete, I receive this error. 

@sand15 Thanks alot for your help sir.

Updated:

@sand15 sir, both figures are ok. Now M appears in legends, but  need to mention other parameters as the labels on the axis, like the Nusselt number, "We" and Br....

I run your command but receive an error.

This results is ok sir