A decent manager should make themselves available to the team, but not interfere with the team unless something's going wrong, or appears to be going down the path of 'going wrong'. They should measure the team by their output, and use that to determine whether things are going wrong, or are about to go wrong.

Attempting to measure a team by their process makes the assumption that the manager is capable of understanding both the current process, and the maximally optimal process against which to compare the current process. It's far safer for both the manager and the team for the manager to avoid such endeavours, and instead measure the output itself against the optimal version of the output, because the output should meet business/product goals against which it can be assessed.