When accessing the Service Catalog users will see various options, or "Catalog Items", depending on the Farm Templates you have published for them. These "Catalog Items" might range from a simple single server Ubuntu Farm where the Farm consists of only one server, or could represent a large Farm with many roles and Orchestration rules pre-defined. We will select Template Test as shown below. Working through launching the template, we are presented with a trimmed down UI where the user only sees a few fields, including the fields they must fill out.
Note that there is red text on the Farm Name field and the Farm Role, indicating that we must supply a value to complete our configuration:
We will add a unique descriptor to our name field and will then attempt to Create & Launch:
We did not supply a missing value, so we are presented with an error and taken to the missing field so that we may enter a value:
After supplying an Instance Type value, we are able to Create & Launch once more:
Depending on your requirements, you may only want your users to have access to a select few options for the fields that are not configured in the template. This can easily be achieved using Policy Groups, as the Service Catalog will respect your Governance Policies.