I wish to know how to insert a new assignment in the Resource Usage view or Task Usage view in MS Project. In my project, we have ad hoc tasks frequently cropping up and resources have to spend time working on those. Hence, when entering project status I want to be able to add the new tasks in the resource/task usage view itself.
There is an "Insert Assignment" option in the context menu but it is grayed out. I want to understand in what cases it is active. Are there any settings for it?