Hello,
You can try few options:
- You can handle this directly in PowerApps when submitting the form or creating the folder
- If you want SharePoint to handle the concatenation instead of PowerApps, you can create a calculated column in SharePoint that combines ContactName and CompanyName. However, calculated columns cannot be set as the primary column (Title), but you can set them as secondary columns.
- When using document management integration, SharePoint uses the primary column (often Title) to name folders. To ensure folders are named properly withContactName +CompanyName