how to display title for each category of image groups in single figure

below is my code i have some N number of image classes and i need to display M number of images per class... and all N-Imageclass images have to be displayed in the same container figure(assume in fig1 only) and before displaying each category of images its image class has to be displayed .(pictorial represenatation is attached plz see)

for j=1:N

imgcategory=Qclass(j);

figure('Name','QUERY RESULTS');

sgt = sgtitle(imgcategory,'Color','blue');

sgt.FontSize = 12;

%sgtitle(Qclass);

for i=1:M

img=imread(cell2mat(Images(Indx(j,i)))); %complete path for each image is rettrieved and read as images in img

subplot(j,M,i);

imshow(img,[]);

end

end

in the above code i have placed the "Figure" within Jth forloop but in this case it generate N number of figures(1figure dialoguebox for each image class) that i dont want

kindly see the picture i have attached and i need to display like that kindly help me the code.