Sometimes, there are many tendencies of handling different clients with different languages. This can really pose difficulty especially when there is no uniform language that bind this people. Though, most people always want to use some major languages that they believe may be common to many of them, but unfortunately, this may not really work in some instances.
Other way forward may be administering this coaching program for them by grouping them base on language. What else do you think?
Other way forward may be administering this coaching program for them by grouping them base on language. What else do you think?