The invention relates to an interlock and setting section for a downhole tool system, the interlock and setting section comprising: a shifting profile located within a throughbore of the downhole tool system, wherein the shifting profile is capable of being coupled to by a shifting tool in the throughbore of the downhole tool system, in order to move the shifting profile with respect to the downhole tool system; a load connector member coupled to the shifting profile and further coupled to a load setting member arranged to deliver a load to a tool as required; wherein there is further provided a selective locking mechanism to selectively lock at least the load setting member to at least one of the downhole tool system and the shifting profile.