Shopify: enable access to webhook creation for staff

Unfortunately this is not documented on Shopify’s own help.

To give staff members (e.g. developers) permission to add webhooks on Shopify, they need the Store Settings / Manage settings permission, possibly also “View customer events” and “Manage and add custom pixels” and “Store policies” permissions:

setting these up in addition to App development helped my colleague to access the Shopify webinterface.