Hello @Warfolomey, welcome to our community 
When you are talking about “updating passwords” do you mean update the password that the employee has access to or/and sharing his unshared passwords?
For the action logs, I’ll suggest you to take a look at this interesting post
For all of his unshared passwords, what I’ll recommend to do is to have a policy where you instruct your users to share all created password properly, this is something you’ll have to discuss with your users as we don’t have a way to do this in our system right now. It could be with a specific group, with individual administrators, through folders permissions etc.
Hope it helps 