is way to change the password for multiple Foglight users at the same time?
there is no way to do that via the UI. Even I do not fully understand why you want to do that, if you change the password for several users it means that all users will have the same password afterwards.
You can run a DB SQL statement to update the password in the DB itself, which will work similar like described in this solution:
That solution describes how to change the password of the foglight user in case it is forgotten. The new password will be a default password: Password1!
You can modify the statement by changing the WHERE clause of the statement so that other users password will be changed
Does that help?