Admin setup
Step 1: Go to Admin panel-> Conversations -> Chat Dashboard-> Payment Method
Step 2: Enable currencies for the added payment gateway in your marketplace

Expert dashboard setup

Step 1: Go to Expert panel -> Settings
Step 2: Select the currency from the list, in which you want to work. (This currency will be used in listing/Sessions/Courses)
Step 3: If Listing/Session/Courses are already created then, update your pricing according to the new currency.