How to assign symbols to the data in Matlab

Question

I am trying to plot some data with categories. However, I couldn't manage to plot my data according to the categories and show a legend for them. Therefore, I am asking a little bit help to this issue. Example data;

Name	Brand	Mt
Enes	Renault	2.6
Avni	Tofaş	2.38
Asaf	Tofaş	3.06

My experience, I have managed to plot these data with two plot command overlaying each other grouping them by Brand. However, this time, one group of data has 2 line (as Tofaş has two data) and the other has only one line data (as in Renault). Thus, x-axis is confusing and not giving a healty graph. The other issue with this, I can't label the x-axis according to Name when I plot two graph overlaying.

figure
plot(table.Mt, 'o');

xtickangle(90)

sizes = size(table.Name);
a1 = gca;
a1.XTick = [1:sizes];
a1.XTickLabel = table.Name;

the output of the code above

[Ism, Ind] =ismember(table.Brand, 'Tofaş');
plot(Ism, 'o')

the output of second code block above

As you can see, when I select only spesific Brand. The rest of arrray filling with zero (0) which I don't want to. What I want is that plotting all data with spesific symbols for each Brand together.

Thank you Enes