The filter on the news feed is reserved for Premium and Ultimate plan users.
Click on the "Filters" button at the top of the news feed, then select the tag(s) by which you want to filter your equipment, tasks and activities.
It is also possible to save frequent searches: to do this, select the tag(s) concerned, click on "create saved search, then assign a name to this search before saving it.
This will now be recorded and accessible directly: