“He invited her to attend his installation as chief of his tribe.”
“The installation of a new system of government in Italy signaled an unprecedented era of reconstruction, remolding, growth, and progress.”
“They have also been able to increase the installation of sanitary equipment used by patients and hospital staff.”
installment
A portion of a debt, or sum of money, which is divided into portions that are made payable at different times. Payment by installment is payment by parts at different times, the amounts and times (often equal namely regular, e.g. mensual) being often definitely stipulated.