Do you mean taking things from the guild storage?
If so, that's not how it works.
Guild storage is for the academy rewards. The guild master can set different rewards for different levels so they can automatically give out to academy members.
For example, if the guild master set the guild storage like below...:
Lvl1 2 Vit (t1)
Lvl2 2 HP potions (t1)
Lvl3 1 Def (t1)
...
Lvl38 1 Slime Pet
Lvl39 2 MD rings
Lvl40 3 Vit (t3)
...
Then when an academy member reaches lvl3, he/she will get one T1 def scroll. And it goes on...at lvl39, the person will get 2 MD rings...etc.
Guild storage is not for any guild members to take in/out items
I hope this clears everything.