Unsure how to add boiler pressure

Hello

I have a new property which has a new boiler and I want to know how to add boiler pressure for future reference.

At previous properties I turned the blue and black taps on the right of the underside of the boiler. However at this property that does not work. There doesn't seem to be the filling loop (maybe I'm getting mixed up here?) I guess I am missing something obvious here.... Please see attached. There is a flexible hose with isolator valves showing (only just) at the bottom of the pic. Perhaps this is what I'm looking for, however I'm scared to adjust anything as its a layout I'm unfamiliar with.... Any help would be hugely appreciated.

Thanks

yo should be able to see the water feed
have you removed the cover and looked at the diagram

it should tell you max operating pressure also

Do you have one of these on the cold water coming into the boiler???

If I see it correctly, your pressure gauge currently reads over a BAR(14.5 psi).
Out of curiosity when/why would you want to increase the pressure? Have you experienced a reduction in pressure in the past?
Take a picture showing more of your piping.