Offset Voltage adjustment for OP177

Dear Sir/Madam,

Our customer asked th following question to me.

As for your OPAMP OP177GSZ,

your datasheet shows the adjustable offset voltage adjustment range is +/-3mV typ by adding 20kohm POT on Rp.

So if we need it +/-6mV, then what is the external Rp value?

10kohm POT?

V+,V-=+/-15V

Maybe this was shown in past sled here but I could not find it sorry

Thanks Kaos