1. Go to More > Accounts > Manage accounts.

2. Choose the MetaTrader 5 tab and tap Add account.

3. Choose the account type, currency, and position accounting model. By default, each deal opens a separate position (hedging accounting model). Turn the toggle on to merge them into one (netting accounting model).

4. Tap Confirm.

5. Make a deposit.

Useful links:

What is the difference between the netting and hedging position accounting models?

How to connect to MetaTrader 5: iOS, Android, Web, MacOS, Windows, Linux