A regular imam at a mosque with no worshippers except on Friday: is it permissible for him not to attend regularly?

Q: I was appointed as the regular imam of a mosque, but the congregation does not pray in this mosque except on Friday, as they leave for their areas after the Friday prayer. In this situation, there is no congregation in the mosque except for three people. The mu'adhdhin told me: "Do not attend except on Friday," since my place of residence is about 30 km from the mosque. I ask you to kindly answer regarding my situation, especially since I am unable to pray all the obligatory prayers there; I work as a teacher and the distance is far. It is worth noting that I was required to attend all the obligatory prayers when I was appointed as the imam of this mosque. We ask for your guidance, and may Allah bless you.

A: It is obligatory for you to pray with them at all times, as your authority has ordered you to do so, unless your authority permits you to appoint the mu'adhdhin or another person qualified to lead the prayer in some of the times, in which case there is no harm.