English to Arabic Other General / Conversation / Greetings / Letters general

i came across the following sentence and found it very confusing.
context :" the parties have caused this agreement to be executed by their representatives who represent to each other and both parties that each is employed in the capacity indicated below...."

How can I translate"who represent to each other and both parties that each is employed in the capacity indicated below" to English ??
your help is appreciated.