Classficationproblem

I have a classification problem. I have a column with different classes, this column I want to take into account when validating with all classes. For example, the problem with Support Vector Machine is that I can only consider two classes and the rest is basically ignored. After consulting my professor, I should use the mapping operator as result. My solution was to add a new column to my CSV file and set the relevant class from the column to true, then the rest would be false. So I should consider all classes with the validation. I hope this approach sounds okay to you so far.