Irrigation help

I’ve got this type of drip irrigation running through some beds with natives. When they were set up they also have a few small sprinklers running off of black poly tube to 3 dwarf citrus plants, a fig tree and a dwarf pomegranate.

The beds that this photo was taken have been stripped back from all the bastard agapanthus and I’ll be planting native ground cover (dichondra most likely). There are about 6 ornamental pears which don’t fit the native motif but they provide a lot of nice shade in the summer so we’re keeping them. They’ll be where the dichondra is meant to go. I have been told they’ll suck up a lot of water.

My questions: – do I need to add NEW black poly tube to these drippers if I want to run a few sprayer type irrigation heads (like what you’d have in raise beds for example)? – I assume I cannot tap into these dropper tubes for an emitter – should these other sprinklers be on their own zone? Currently they’re on the same zone as the drippers but in summer I have to manually water because the citrus and fig need way more than the native plants in the beds – will removing these change water flow/output/pressure in the dripline?