Timeline filters don't have the option to Save

Summary

When setting some filters in the timeline it won't have an option to save the filter.

Steps to Reproduce

1. Open a business project and click on Timeline from the Project sidebar.
2. Try to set a filter from the Filter on the right corner.
3. It will display the results of the set filter.
4. However, there is no option to save the filter, and switching the view reset the filter selected as stated in the documentation.

Expected Results

There should be an option to Save filter which is set so that switch views won't affect the filter.

Actual Results 

Filters selected which are set are restored to defaults.

Workaround:

Currently, there is no workaround.