After a signal word such as ita, sic, tam, tantus, talis or adeo, a clause with ut and the subjunctive says what follows as a result: "so … that".
Look for the signal word in the main clause: ita, sic, tam, adeo "so", tantus "so great", talis "such", tot "so many"; then ut + subjunctive.
Translate "so … that", "in such a way that", with an ordinary English verb, not "may": ita sint agenda, ut … referantur "must be done in such a way that they are directed …".
The negative is ut non, ut nemo, ut nihil, ut nunquam, never ne; this is what tells result from purpose.
Not every ita … ut is a result. With the indicative, ut means "as" (ut … ita "as … so"); ita … ut qui + subjunctive means "in such a way, as one who" (see relative clauses with the subjunctive).