Setting an existing project filter as a default from the Filters dropdown
Select Projects > Project list.
Select one of these tabs:
Simple search.
Advanced search.
Action.
On the right-hand side, select the Filters dropdown.
In the Filters dropdown list:
Select the project filter that you want to set as your default. To do so, hover over the relevant filter.
Result: The filter name is highlighted.
Select the white star icon
next to the project filter that you want to set as your default. When you hover over the icon, the Set as default filter label is displayed.
Result:
The relevant filter has been set as your personal default project filter. It is displayed at the top of the Filters dropdown and marked with the black star icon 
.
Note
You can only have one default project filter. So, if you have previously selected any other default filter, it will be replaced by your new selection.
Learn more about using, creating and deactivating default project filters.