Scenario based exercises vary in scope.
Where your organisation is exploring the value of developing the crisis management capabilities of your senior team(s) - or there is value in bringing new members up to speed - a straightforward introductory seminar may achieve the required objectives (green dots in table above).
This can generally be done working remotely with your nominated representatives by email and phone - with a webinar seminar by video link to follow up on the initial work with your team. The option to conduct the seminar face-to-face can always be considered as a variation if required.
As scenario based exercises become more complex - involving other stakeholders; and in some cases sensitivities which benefit from face-to-face contact - the objectives are better achieved by methods listed against the orange dots - ramping up to the red dots for the most complex scenarios.

The most effective way of meeting your needs starts with a conversation focused on scope.