4 sentences

1. 他不想亲自处理此事，便假手于人来代办。

   tā bù xiǎng qīn​zì chǔ​lǐ cǐ shì, biàn jiǎ shǒu yú rén lái dài​bàn.

   He didn't want to handle the matter himself, so he had someone else do it for him.

   Source: Dong Chinese Dictionary

2. 如果你没时间亲自去，我可以帮你代办这些手续。

   rú​guǒ nǐ méi shí​jiān qīn​zì qù, wǒ kě​yǐ bāng nǐ dài​bàn zhè​xiē shǒu​xù.

   If you don't have time to go yourself, I can handle the procedures for you.

   Source: Dong Chinese Dictionary

3. 他在这个商业项目中充当中方代办的角色。

   tā zài zhè gè shāng​yè xiàng​mù zhōng chōng​dāng Zhōng​fāng dài​bàn de jué​sè.

   He acts as the Chinese representative in this business project.

   Source: Dong Chinese Dictionary

4. 大使回国期间，由参赞担任临时代办处理馆务。

   dà​shǐ huí​guó qī​jiān, yóu cān​zàn dān​rèn lín​shí dài​bàn chǔ​lǐ guǎn wù.

   While the ambassador is back home, the counselor serves as the chargé d'affaires ad interim to handle embassy affairs.

   Source: Dong Chinese Dictionary