Selection Filter: Lets you set Selection Filter so that only specific objects can be selected. For example, if you want to select only animatable objects, choose "Animatable" filter from dropdown list.
Types: Lets you choose what type of assets you want to select.
Root Only: If you check this checkbox, only Root (Main for characters) controller will be selected. This is useful when you want to move many assets at same time.
Category: Lets you hide specific objects especially for characters.
Hide Selection: Hides selected objects.
Isolate Selections: Isolates selected objects.
Unhide All: Unhide all objects except some objects used in characters rig.