What does this clause do?
It is not always possible for parties to be together when signing an agreement or to sign the same copy of an agreement. If a contract has a counter parts clause the parties can sign different copies which can be treated as original copies of the agreement.
Kleva contracts sample wording:
This Agreement may be signed by the Parties separately (i.e. each Party may sign their own copy of this Agreement) and each separate part will, when they are put together, be deemed to be one and the same Agreement signed on the date on which the last Party to sign does so.