Before it proceeds with an investigation, the CMSD will satisfy itself that there are grounds to investigate under the statutory provisions that give the CBB powers to appoint investigators. If the statutory test is met, it will decide whether to carry out an investigation after considering all the relevant circumstances. To assist its consideration of cases, the CMSD will apply a set of assessment criteria stated in paragraph MIE-2.2.4. Not all of the criteria will be relevant to every case and there may be other considerations which are not mentioned in the list, but which are relevant to a particular case. The CMSD's assessment will include considering whether using alternative procedures is more appropriate, taking into account the overall circumstances of the person concerned and the wider context. Another consideration will be whether the CBB is under a general duty to take action on behalf of, or otherwise to provide assistance to another domestic or overseas authority.