HoleBASE - how can I make only boreholes from a particular location group show on the map?

In HoleBASE SI I've not found a way to display on the map only the desired exploratory holes (e.g. a location group).
I am aware this is possible in civils extension for holebase but I want to be able to do this in Holebase - easier to produce plans in Holebase with background mapping / background 1:50,000 geology etc.