Login as an HOD
In the homepage you will find out the Courses under your supervision
Press on the Teacher's picture or the name
Now Press on Content
Choose the Topic, subtopics and lesson
Press on Lesson name
A box now appears that shows the lesson details and plans
Click on Plans
Now , the previously created plans are shown
Edit icon is found beside the lesson plan name
Press on it and make the required changes, and don't forget to press Save