I hear you!
My background is PA work. A while back I changed direction and now have a clinical job in the NHS. However, I am a band 4 and cannot move forward in my current role without going back to uni for three years. I already have a degree and don't particularly feel like going back to study/not earning for three years.
I'm considering going back to PA work but one of the reasons why I changed was clarity around the role and picking up all the work that other people can't be bothered to. An issue that got progressively worse over the years as numbers of admin staff have been reduced.
Admin staff ARE generally undervalued. In the NHS, it is almost worse because they are very low paid and there is the added problem of the culture. For some bizarre reason, quite a few clinicians assume that anyone who is not clinically trained does not have the knowledge or the intelligence to make decisions/manage. I can't tell you how many times I have heard staff say something along the lines of 'couldn't possibly understand unless you are a clincian'. The joke is that a lot of the time they are talking about basic things that could be understood by anyone with half a brain.
My background is private sector and, much as I love the NHS, the operational and management side of it is some of the worst I have seen in my career. I attribute a lot of this to highly qualified and knowledgeable clinicians running services who have no idea about operational management. All training is geared to clinical skills which further doesn't help.
In your position, I would start keeping a log of all the things you are doing. Divide these tasks into what you think should be under your remit and what you think shouldn't. Clarify this with your manager and agree with them what tasks you can push back on. From there, I would take a good hard look at the office and see what's not working and why. I would then look at improving those processes. Is there a booking system that is paper based (an NHS favourite!) that you could transfer to a spreadsheet?
I think the worst thing about admin jobs is that unless you've done the job yourself you will have no idea that picking up the random bits of crap is actually pretty soul destroying. Our service employed a new admin recently. When the team discussed tasks that person could do, the first suggestion was print and file hard copies of emails
. I nearly bloody fell off my chair. Far better to take control and create a set up that will make everyone organised and efficient because frankly that is not a strength for the majority of clinicians.
If you are looking to move up, you could possibly look at the business manager/service manager/head of route. Is it possible but probably not as clear cut as being a nurse or physio.