Complex sentence: Unlicensed assistive personnel are important members of the healthcare team who often hold a high level of experience and ability, but without qualification and are unable to often perform some tasks due to issues of liability and legality.
Split into simpler sentences: Unlicensed assistive personnel are important members of the health care team who often hold a high level of experience and ability. However, without formal health professional qualifications, they are unable to often perform some tasks due to issues of liability and legality.