What techniques PM should use to collect requirements (by the way the requirement gathering bases on stakehold register)?
Interviewing -- also called "expert interviewing". The team or project manager interviews project stakeholders to identify their requirements for a specific element of product or product. This interview could be by individual or by group through email or phone.
Focus group -- it collects specific information from a set of stakeholder or experts to get requirements for product or project. A group people share information and controlled by moderator.
Facilitated WorkShop -- bring stakeholders together to talk about different perspectives of the project or product.
Brainstorming -- It is not about a group people discuss ideas, but about generate ideas from one and another.
Nominal Group Technique -- It is a group of participants rank useful ideas which are generated from brainstorming.
Delphi Technique --A request for information is sent to expertswho participants anonymously, their responses are compiled, and the result are sent back to them for future review until consensus is reached.
Mind Maps --
Questionnaires and surverys --used for large groups.
Prototypes -- presents the prototype to stakeholders for feedback.