Your rules, applied every time
Who should sign off a competency depends on what it covers. In Compassly you decide who can assess and mark each stage and who gives the final sign-off, and every sign-off is checked against those rules as it happens. A common example is that any trained assessor can assess a formative practical, while only educators or senior nurses assess the summative stage and sign the competency off.
Most competencies need nothing extra, because Supervisors assess the people in their own teams. You add rules only where a competency calls for them, so governance is as light or as tight as each one needs.
Where a competency needs more than one signature, as many organisations require for advanced practice or prescribing, Compassly can ask a specialist to sign off the part in their area and a senior lead to give the final sign-off. Your organisation keeps the lists of who can do each, and can update them in the app as people train, move or leave.