Select Subversion->Subversion Access in Admin panel

• click on Subversion Paths

Example:

[/]
* = r
[/branches/calc/bug-142]
harry = rw
sally = r
[/branches/calc/bug-142/secret]
harry =

• / = Everyone has read access by default
• /branches/calc/bug-142 = harry has read/write access, sally read only
• /branches/calc/bug-142/secret = harry has no access, sally has read access (inherited as a sub folder permission)

Example for multiple repositories:

[firstRepository:/]
* = r
[secondRepository:/]
harry = r