Action RPG Inventory System

Hi ! It seems to be an excellent system but I have a few questions if you don’t mind.
I already have my UI template which doesn’t look at all like your defaut UI, and I want to know if it’s possible to modify your UI while keeping all the system you made (equip/drop etc.) ?
In my template I have the possibility to sort item by “Slot” like Helmet, Torso etc. Do you think it can be possible to create this system upon your own without running into conflicts ?

Also I already have a project and I have read that it doesn’t really work out of the box. You have a video on how to migrate it in a project, but I fear it might be a bit outdated. Is this process still necessary ?

Thanks !