once person becomes CA, he can do CA related work like accounting , auditing , taxation etc only incapacity of CA after taking COP
that means ca, who is LLb also cannot do tax practice on the basis of LLB qualification … he will have to take cop and practice as ca only…
so once ca all ca related work can be done.. only in capacity of ca after taking COP

please see this link also

a ca in practice is suspended based que hai ,ok then in p.m answer it is written as :-he cannot in any other capacity take up practice separable from his capacity to practice as member what does this mean sir plz clarify