The PSA (Production Services Association) have just today released a set of guidelines for the touring industry.
These set of guidelines are very well written, easy to read and understand, and a great way of dealing with the matter of securing not just artists but mainly the crew, which a lot of guidelines haven't really covered yet. This guide also provides countless options and potential solutions for specific touring issues in relation to COVID-19.
Link to the PSA website:
Link to the guidelines: