Enable app catalog at site collection level using PowerShell.
In SharePoint Online we can deploy apps, SPX solutions based on our requirement to appcatalog at site collection, once we deployed at app catalog site collection solution will be available for all site collections and developers need to contact admins to deploys apps multiple times this will impact on project deliverable’s.
To avoid this, we can enable app catalog at site collection level itself using PowerShell.
To deploy apps at site collection level we need to enable app catalog at site collection level using PowerShell, for enabling we should require Tenant admin access (For me it is working fine with SharePoint Admin access) and to deploy apps required site collection admin access.
To enable App catalog for multiple site collections based on our Input file. Create a CSV file as per the below format .