Synonyms for Attending (same or very similar meaning)
WordNet sense 1 (the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others):
attention
WordNet sense 2 (being present (at meeting or event etc.)):
attendant
WordNet sense 3 (spatial sense; being or existing in a specified place):
present
WordNet sense 4 (serving attendance on someone):
ministrant, ministering
WordNet sense 5 (providing assistance or serving a useful function):
helpful
WordNet sense 6 (the act of being present (at a meeting or event etc.)):
attendance
From the ODE community, based on WordNet
add/edit