Complex sentence: The initial secretariat was established in a one-room office at NRSP as mutually decided in the workshop; the secretariat had to be located in different member organizations on rotational basis but it continued to reside at NRSP till the launch of its independent premises in 2001.
Split into simpler sentences: The initial secretariat was setup in a one-room office at NRSP as mutually decided in the workshop; the secretariat had to be located in different member organizations on rotational basis. However it continued to reside at NRSP till the launch of its independent premises in 2001.