Our team has grown a lot within the past 1 1/2 years, from 3 people to now 20 people, in two different locations.
Since top level management thinks that what we're doing is really gonna grow a lot bigger in the future, we're now being split off into our own legal entity, which will be a 100% child company of my current employer. My current manager will function as the CEO of that new company.
I've been open about wanting to have more responsibility and he's recently told me, that I'll be promoted to be the manager of one of the two teams (basically, I'll be responsible for one of our two locations, with round about 10-15 people).
My problem is that the HR of my current employer (the future parent company) seems to like blocking people from actually getting ahead. I had a talk with them about half a year ago, where I also expressed that I'd like to take on more responsibility, but they just gave me the usual: "Well, you've only been in the company for little over a year now, it'd be very unusual for you to even start a personal development plan at this point." and "We could get something going, and that would probably take you 2 years to complete".
Meaning: I'll be stuck for at least two more years in my current position without any salary increase.
My current manager himself has been 100% supportive of me, and I feel like he really wants me to get ahead as well.
Something I also need to include here: We're working as part of a collective agreement, which sets salary ranges etc. for all employees, depending on what they do.
My question is: According to my new position, I should receive a salary of X, based on that salary range. I feel like HR will argue stuff like "lacking experience", the current budget situation or some other bullshit to prevent me from actually being paid what I'm worth. How can I prevent that?