Collapse All / Expand All on Timesheet

[#1]

My users work on a lot of Projects in a month. As a result, their Timesheets get full quickly! They would like a button to Collapse All (below Projects have been individually collapsed manually) and Expand All Projects.

[#2]

We're in the same boat. This is a much needed feature. I think it would be beneficial to have a user setting to along as well whereby an expanded or a collapsed view can be set as the default view by the user.