I want to have Single AND Double lessons of one subject! E.g 1+1+1+2

If you work in ASC TimeTables Online, please see this: How to add the same lesson with multiple lengths in Timetables online

In PC version, you can add into teachers' lessons that he is teaching e.g. 3 single and 1 double.

Please check this picture.

It means he is teaching 1+1+1+2 = 5 lessons per week.

Notes:
- If you do not know how many of these lessons will be double and how many single please read this article: I want to have 1+1+1+2 OR 1+2+2 lessons per week.

- You can also use lessongrid to input this combination in easier way. Just open lesson grid and type 2111 in desired cell. See:
Lesson grid overview
Count per week - format