they should identify at least one person on staff who will be responsible for the map, ensuring it is regularly updated with incoming information;110 • Investigative planning should include methods and strategies aimed at capturing a range of perpetrators; • Where time and resources allow, investigation planning should contain strategies for securing linkage information and – for international crimes – securing information on mens rea and modes of liability; • Where possible, specific questions should be prepared for each interviewee; investigators may be provided with a pre-prepared set of questions to ensure that perpetrator information is appropriately secured during interviews; and • The personal security of interviewees is never more important than when the topic concerns specific individuals and their responsibility for crimes and violations. Staff must pay maximum attention to witness protection, consent, and information security protocols.111 See section on “Mapping Actors and Institutions” in chapter on “Investigation Planning”, OHCHR Human Rights Investigations Manual (forthcoming); see also annex 2, “Sample tools to help map structures and individuals”. Certainly others can contribute to the map in various ways, and it may not be the only task of the designated individual, but one person should ensure, and be responsible for ensuring, that all the information collected is properly recorded. 111 Further information on these topics is available in the following publications: OHCHR Manual on Human Rights Monitoring, chapter 14, “Protection of Victims, Witnesses and other Cooperating Persons” and chapter 15, “Gender”, in particular stage 3, “Actor Mapping”; UNDP’s Gender Approaches in Conflict and Post-Conflict Situations, October 2002; and OHCHR’s Gender e-Tool/online course. 110 COLLECTING AND ANALYSING THE INFORMATION 69