It is recommended that all research students keep records of formal meetings with their research supervisor(s). This means that they will be able to trace the history of how their project developed over time. These records may also help to prevent misunderstandings and will assist with reminding both supervisor and supervisee of deadlines agreed, action points to be taken, or issues to follow up. 
It is up to individual supervisors and supervisees to determine what sort of record keeping system will work best for them. Some supervisors request that their students email them a meeting summary following each formal supervision. Others recommend keeping a dedicated logbook or shared document. A sample Supervision Record Form that can be used or adapted by postgraduate research students is available below.