How can I access to specific function of an instrument with labview with IVI generic driver?

Hello,

I would like to access to an specific function of the Agilent N6700 from my labview program in the same way as ConfigureVoltageLevel (with IVI technology). Ex : ConfigureExponentialSeqWfm.

The IVI driver make available some generic functions but it is not enough for the Agilent N6700.

I need to access some functions which exist in the N6700 driver but isn't in the IVI DC power driver.

I want to use IVI technology because I need to deal with instrument obsolescence. I know I can directly call the specific driver

but it will be difficult to interchange instrument.

How can I access to this specific function?

Can I do an IVI DC power custom class to add the additional functions?

Thank you for your answers