To enable host printer on Window Sandbox, create simple sandbox configuration (.wsb) and double click or open it.
<Configuration>
<PrinterRedirection>Enable</PrinterRedirection>
</Configuration>
For sharing certificates,
<Configuration>
<MappedFolders>
<MappedFolder>
<HostFolder>C:\Users\[USER NAME HERE]\AppData\LocalLow\NPKI</HostFolder>
<SandboxFolder>C:\Users\WDAGUtilityAccount\AppData\LocalLow\NPKI</SandboxFolder>
<ReadOnly>true</ReadOnly>
</MappedFolder>
</MappedFolders>
</Configuration>
For further information, visit
https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-sandbox/windows-sandbox-configure-using-wsb-file