Allow certain users to write in sub directory of read-only share

[Sally-san]

Im not sure if this is possible but lets have I have a Work share that is read-only among people and you want grant them write access to a specific directory how would i do that?

Edited May 26 by Sally-san

[trurl]

You can only control access of user shares. Put the data you want others to write in a separate user share.