Is it permissible to delay Maghrib prayer or any other prayer for an hour after the call to prayer (adhan)?

Allah has commanded His servants to observe prayers at their appointed times, and this includes performing them in congregation at the mosque. It is not permissible to miss congregational prayer except for a legitimate Shar'i excuse, such as rain or illness.

It is not permissible to delay the Maghrib prayer by about an hour. As for the other prayers, it is permissible to delay them if there is no fear of their time expiring, but this should not be a Muslim's regular habit, because praying at the beginning of its time is better.