Right Click Add To Filter Option Missing - CMS?

Any customers out there that have CMS without asset managenent, can you tell me if you have the option under Manage Computers to right click a computer and add it to a filter?

I'm not getting this option and wondering if you need asset management to get it.  If so, that's a shame.  Building right click options seems overly complicated, if it's even possible for this.

I'm CMS 7.5 SP1 HF5.