Is it permissible for the Imam to sit on a chair after becoming tired from standing during Tarawih prayers in congregation at home?

Voluntary (nafilah) prayers performed while sitting are permissible, even if the worshiper is capable of standing, and whether the sitting is from the beginning of the prayer or during it. However, the reward for a sitting worshiper is half the reward of a standing one. Accordingly, it is permissible for the imam to pray Tarawih while sitting on a chair, and it is permissible for the congregants behind him to follow him while standing.