A Vaishnava worships demigods by glorifying their devotion to the Supreme

A Vaisnava does not disrespect the demigods, but on the other hand he is not so foolish that he accepts each and every demigod as the Supreme Lord. The Supreme Lord is master of all demigods; therefore the demigods are His servants. The Vaisnava accepts them as servants of the Supreme Lord, and he worships them directly. In the Brahma-samhita, the important demigods–Lord Siva, Lord Brahma and even the incarnations and expansions of Lord Krsna like Maha-Visnu, Garbhodakasayi Visnu and all the other visnu-tattvas, as well as the sakti-tattvas like Durgadevi–are all worshiped by the process of worshiping Govinda with the words govindam adi-purusam tam aham bhajami. A Vaisnava worships the demigods in relation to Govinda, not independently.

Srimad-Bhagavatam 5.4.17 purport