English to Russian Bus/Financial Real Estate

Dear all, I have a problem translating 'multiple agency' into Russian, some of the examples of the context are:

*Multiple agency*: where you have competing contractual relationships simultaneously with several sellers or buyers.

and

You should have regard to the particular circumstances of the situation in which you are involved before deciding whether to disclose any interest.
In the event of *multiple agency* for one of the parties, you must pay equal respect to your clients’ interests and also work in this situation with the highest possible degree of transparency.

Would be greateful for your help.