Learn Turkish: Bu ayrıcalık patron tarafından tahsis edildi. - This privilege was allocated by the boss.

In Turkish passive sentences, the agent (the one performing the action) is expressed using the word tarafından (literally 'from the side of'). If you just said patrondan tahsis edildi, it would sound like the privilege was physically transferred out of the boss, rather than indicating the boss was the grammatical agent who authorized it.

How is the passive voice formed in the verb tahsis edildi?

For compound verbs made of a noun plus etmek (to do/make), all voice suffixes are attached to the helper verb. Here, the passive suffix -il changes etmek into edilmek. Thus, tahsis etmek (to allocate) becomes tahsis edilmek (to be allocated).

Since we are studying double causatives, how would we change this sentence to mean 'The boss had someone allocate this privilege'?

You would drop the passive structure (tarafından and edilmek), make the boss the active subject, and add the double causative suffixes -tir and -t to the helper verb. The verb etmek becomes ettirtmek. The resulting sentence would be: Patron bu ayrıcalığı tahsis ettirtti.

What is the root of the word ayrıcalık (privilege)?