mbot problem

so i started today to use mbot.. ( s*it ! )
i use wiz+bard ( staff + harp )
btw i dont want to store the "harp" bcz after i cant set buff of bard :D
so when the bot return to town to buy potion ecc
go to storage and store "the harp"

solutions ?

thx for aswer

go to items, Search "the name of your weapons" staff and harp , uncheck store and sell

thanks you so much

You're welcome