ACL View Permissions

Admin Creates Workspace folder,Work space.

where as other users can access these!

For each workspace folder Admin can set ACL View Permissions,right now we set it has All users.

Incase if i want to set different ACL View permissions for different Users where exactly i have to do this.

If I See ACL Permissions it shows

Principal = <All Users> [ for user specific what needs to be done]

Principal Type = Bydeafult All(my case rightnow)

Description =

Inherited from = / Root

Grant type = Grant

<access> =

<read>=

<write>=

<checkin>=

<import>=

<export>=

<integrate>= ?

<AdminA>= ?

<AdminX>= ?

Can any one explain what exactly these things mean marked in ?.

Regards,

RK