What G*Power function would I utilize to answer the question:

What is the difference in self-efficacy, burnout, and workload among hospital, university, and manufacturing administrators?

Conduct an a-priori analysis using a large effect size, an alpha of .05, and a power of .95. What is the total number of participants needed in your sample?

I am not requesting the answer just guidance on which G*Power function I would utilize to get the answer.