One approach —
x = 1:10;
y = rand(11,10);
NrSbp = size(y,1);
figure
for k = 1:NrSbp
subplot(6,2,k)
plot(x, y(k,:))
grid
xlabel('x')
ylabel('y')
title(sprintf('Subplot %2d',k))
end
subplot(6,2,k+1)
text(0.5, 0.5, sprintf('Put Caption Here'), 'Horiz','center', 'Vert','middle')
Ax = gca;
Ax.XAxis.Color = 'none';
Ax.YAxis.Color = 'none';
Make appropriate changes to get the result you want.
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