As stated in many countries' central banks, the currency symbol has to be left side of the amount fields.

According to this explanation, you may want to set the currency symbols (₺, $, €, etc.) to the left side of the amount in the Wolvox Barcode Sales program. For this;

Open Wolvox Barcode Sales program and follow the steps 'Admin->Custom Definitions->Custom Settings' to open the custom settings

In the window that opens, click on the 'General Settings' tab, activate the setting and save it by clicking the 'Save Changes' button.

After you reopen the sales screen, you will see changes.