How to solve Jaheira's Sanctuary Pin Slot puzzle in BG3

I'm at the Elerrathin house and there's a pin hole in the back Insert the pin into the 'Pin slot' downstairs, on

How to Open Secret Study Desk in Jaheira's House in Baldur's Gate 3 BG3 Subscribe for

bg3 elerrathin''s home pin slot After exploring the city, Faylen stumbles into Jaheira's home Watch from the beginning:

bg3 pin slot How to Open Secret Study Desk in Jaheira's House in Baldur's Gate 3 BG3 Subscribe for