Where I work we are currently using a modified version of HESK that has sub categories.
Email Issues -> Lost Email
Email Issues -> Password
Email Issues -> Signature
I know that this has been requested on the HESK forum's since 2012 and not implemented in the main HESK. I've managed to hack something into HESK 2.6.5 / MfH 2.5.3 but with your planned overhaul of how categories work, I was wondering if it would be possible to add this into the system at some future version of MfH.
I’m currently closing this feature request at this time. Implementing sub-categories is quite a complex change from a logic (and especially security) standpoint. If “regular” HESK ever includes subcategories, then Mods for HESK will adopt HESK’s subcategory logic.