Feels like there is a lot of confusion / noise in the thread. Let's jump back to your initial question and ask what your exact plan/purpose is because your question was already answered and I have the feeling you might not understand even what ACES means for your workflow.
Pavle05 wrote:Hello, I was wondering if it was possible to edit this footage in the ACES color space?
Thanks
What exactly do you mean with "working in the ACES color space"?
If you mean you want to grade in ACES by having ACES' tone mapper as your output transform you can again use a CST to convert F-Log / Rec.2020 to whatever working space you'd like that ACES does support like ACEScct but any other like Arri Wide Gamut/LogC would work too. Then apply ACES Transform at the end of the grade to go to display state.
If you mean you want to grade your footage with ACES as the project wide management setting you will need the IDT for it which you can obtain as a DCTL file like Shabuda said.
There really is not much more to it.