Filter for data (a lot of parameters)

I have a bit of struggle to make this more useful. Current situation is something like in the picture below. Dropdown represent filter for bottom table (if you select group, you have only users from that group, if you select category you have only those projects in that category, type is for all). I was thinking something like tag input but, if you select ALL, there are A LOT of tags there. How can i make this more user friendly and compact? The result of that is some sort of table at the bottom where it shows in tree view some informations.