New ticket 1ste level, 2de level,.. drop down

[MatijaTerzic]

I would like the following:

When a customer makes a new ticket he has to choose with a dropdown "Hardware" or "Software" then a new dropdown appears with the subselection of "Hardware/Software" (eg. Hardware -> Computer, keyboard,...)

Is this possible ?

[jojo]

yes, via dynamic fields and ACLs or perhaps a better solution is to use the services