I was a de facto 'senior' member of a group of 5 - not recognised by title or salary but I knew much more than the others, was the "go to" person for everything, etc.
Then this was formalised by making me Supervisor (with explicit line management responsibilities) with an increase in salary. This was in response to me having an offer from a different company. But it was really just a recognition of the role I had been carrying out anyway. On the org chart you could say I was "inserted" as supervisor between the others and my boss. So now the others would report to me.
Now I am the line manager of my former peers, and (unlike in most of these situations!*) they have accepted it, and they look to me as their 'boss' to set direction for them, etc. (*I say unlike most situations, as I've more often seen it that former peers refuse to accept the authority of the 'new boss', which is a much easier problem that I would be able to handle!)
My problem is that my boss - who was the boss of all of us, but is now just my boss and their "boss's boss" - doesn't seem to give me the authority to make decisions as a manager.
A couple of examples:
I needed to invoke the disciplinary process on one of the people who report to me, for a relatively minor infraction but still one that needs to go through HR (I would rather prefer to deal with it informally if possible, but it reached the HR-involvement level of severity). My boss insisted on carrying out the process and cut me out of the discussion. That's pretty undermining to the report's perception of me as their manager isn't it?
One of my reports (different person from 1) asked if they could leave 1.5 hours early due to "specific unusual circumstance" to which I agreed having taken into account the surrounding circumstances. My boss then called me out over it saying I should have turned it over to him and he would have refused, I didn't have the right to approve that and the report should have made the time up instead of just leaving early and being let off. (In response to this I worked the extra 1.5 hours rather than ask her to make it up, to make the point to the boss.)
How can I talk to my boss, (or HR, maybe?) about this situation? I want to be able to exercise responsibility as a full manager, but if not possible I'd like to get some acknowledgement from my boss.