YES, you can Drag & Drop a task. Please refer below steps to do so;

1. Login to your orangescrum account using your credentials.
2. Navigate to Left menu > Tasks > Kanban
3. You can find all the task details in the kanban. Here, you can drag and drop the tasks from ‘New’ to ‘In progress’ or to any other status you prefer.(Refer to Image-1)

(Image 1)